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With the increase in the number of new energy vehicles, the demand for charging and replacing facilities for new energy vehicles has increased simultaneously. Due to the relative shortage of land and power resources in China, we think that with the continuous increase of vehicle ownership,The power exchange mode is expected to be a good supplement to the charging mode, and it has broad medium and long-term development prospects.

Nowadays, the construction and operators of power exchange stations are responsible for the construction and operation of power exchange stations and provide power exchange services to the market. Among them,Power exchange system is the core of power exchange station.

Image source: Wei Lai

So, what is it?"Power exchange system"And?

What is the power exchange system?

Power exchange station refers to a power station that stores, charges and distributes a large number of batteries in a centralized charging station, and provides battery exchange service for electric vehicles in the battery distribution station or integrates battery charging, logistics deployment and power exchange service itself.

The power exchange station mainly includes positioning system, power exchange system, operation and maintenance system, security system and logistics system.The power exchange system is the core of the power exchange station.It consists of a power exchange platform, a stacker, a lifting mechanism, a locking mechanism and a connector.

Schematic diagram of vehicle-mounted power exchange system

The power exchange system is also an important part of the power exchange technology of electric vehicles.Its main function is to unload the battery from the electric vehicle, transport it to the battery compartment for charging, and at the same time obtain the fully charged battery from the battery compartment and install it on the electric vehicle to complete the power replacement work.

Composition of power exchange system

The power exchange system consists of the following key parts:

1. Power-changing robot:This is one of the most important equipment in the power exchange system, which is responsible for the disassembly and installation of the battery.

2. Add unlocking platform:Realize the replacement and unlocking functions of vehicle battery pack.

3. Stacker:Used to transport and exchange batteries.

?4. Lock the link component:Realize the rapid and automatic locking and separation of the power battery and the car body.

5. Quick-change electrical connector, liquid-cooled connector and water connector:These connectors play a key role in the process of power exchange, ensuring the fast connection and stable power supply of the battery.

Classification of power exchange system

According to different functions, the power exchange system can be divided into the following ways:

?1. Vertical power exchange of chassis:Dismantle the original battery pack from the lower part of the chassis and replace it with a new battery pack. It is suitable for cars, SUVs, MPVs and light logistics vehicles, with a high degree of automation, but a new fixed power station needs to be built.

?2, chassis side for electricity:The battery is fixed in the form of a frame, and the operation is complicated and long.

?3, box for electricity:Battery compartment replacement is suitable for scenes that require less space and time.

Application Scenarios of Power Exchange System

The power exchange system is mainly used in commercial vehicles and private passenger cars.Especially in the high-frequency use scene that needs rapid recharge, the effect is remarkable.For example, the energy management system of heavy trucks can improve the efficiency of power exchange, optimize energy utilization and reduce operating costs through intelligent and automatic means.

• ?Shared electric vehicle field:As the new favorite of urban short-distance transportation, shared electric vehicles provide a reliable charging solution for them. By arranging power exchange stations in different areas, users can conveniently park electric vehicles on the stations for battery replacement, thus realizing long-term use.
• Logistics distribution field:In the field of logistics and distribution, electric vehicles have become an important means of transportation. The application of power exchange mode provides an efficient and convenient charging scheme for logistics distribution vehicles. Logistics enterprises can replace batteries at their own distribution sites or partner’s power exchange sites without waiting for charging time, which improves distribution efficiency.
• ?Travel and tourism field:In tourist attractions or city power exchange stations, visitors can easily change batteries and continue their journey. This not only reduces the charging time of tourist vehicles, but also avoids the embarrassing situation that they can’t continue driving because of insufficient batteries. At the same time, the power exchange mode avoids the trouble of tourists looking for charging piles during the tour and improves the convenience of travel.
• ?Urban public transport field:Electric buses, electric taxis and other vehicles can replace batteries at bus stops or special power exchange stations, which can quickly restore power and improve operational efficiency. At the same time, the power exchange mode solves the problem of the shortage of charging pile resources in the traditional charging mode, and provides better service for public transportation.

Advantages and disadvantages of power exchange system

The main advantage of the power exchange system is that itEfficiency and convenience.Compared with the traditional charging method, the process of changing power is usually completed in a few minutes, which greatly shortens the charging time of electric vehicles. In addition, the power exchange system can also be standardized, so that different brands and models of electric vehicles can share the same set of power exchange facilities.And the utilization rate and compatibility of facilities are improved.

First, advantages:

Quick recharge:The process of power exchange is usually completed in a few minutes, which improves the efficiency of energy supply.

Battery maintenance:Through centralized charging and unified management, it is helpful to prolong battery life.

Boost battery recovery:Standardized batteries are easy to recycle, reduce recycling costs and improve resource recycling efficiency.

Image source: Futaijie Testing Innovation Center, the picture shows the new energy vehicle power exchange system.

Second, the shortcomings:

Technical standards are not uniform:The battery specifications and interfaces of different car companies are different, which makes it difficult to use the power exchange equipment universally and increases the construction and operation costs.

High construction cost:The construction cost of power exchange station is high, including equipment purchase, site construction and power facilities transformation.

Impact of technical iteration:With the development of battery technology, the advantages of battery replacement technology may be weakened, such as the development of overcharge technology may shorten the charging time.

Technical requirements of power exchange system

The realization of power exchange system needs high-precision mechanical arm, intelligent identification system and efficient battery management system and other technical support. The integration of these technologiesIt ensures the safety, rapidity and convenience of the power exchange process.

The technical requirements of the power exchange system mainly include the following aspects:

?Security:The design and manufacture of power exchange system shall meet the following requirementsReplace the battery pack safely, quickly and reliablyRequirements. In the design life cycle, the system should have the functions of electricity, communication, thermal management, etc. that meet interoperability.

?Electrical connection:The electrical connection of the power exchange system shall meet the following requirementsPower transmission, information interaction and security protectionBasic functional requirements of.

Communication protocol:The power exchange system shallIt has the function of connecting with the vehicle electric platform.The system should support a variety of communication protocols, including but not limited to CAN bus communication protocol, to ensure the accurate transmission of battery information, relay information, energy estimation and other data.

Interoperability:Power exchange systemShould be interoperable,Ensure that different brands and models of battery boxes are compatible. This includes the overall size of the battery box, the upper interface of the battery box, the lower interface of the battery box, the power exchange interface of the vehicle bracket and other technical requirements.

Maintenance and replacement requirements:The consumable parts in the power exchange system should be in the vehicle instruction manual.Clearly mark its scope, maintenance and replacement requirements.During the maintenance period specified by the vehicle manufacturer, the easily worn parts should not fail.

Thermal management and fault diagnosis:Power exchange systemShould have thermal management function,Ensure the temperature control of the battery during operation. In addition, the system should also have fault diagnosis function, which can monitor and report the battery status, relay status, energy estimation and other information in real time to ensure the stable operation of the system.

Standardization and compatibility:Power exchange systemShould follow the relevant national standards and industry standards,Such as GB/T 37133 and related standards and specifications, to ensure the standardization and compatibility of the system.

By meeting these technical requirements, the safety, reliability and interoperability of the power exchange system can be ensured, and the use experience and operation efficiency of electric vehicles can be improved.

Challenges faced by power exchange system

However, the power exchange system also faces some challenges, such asThe investment cost is high and the battery standardization is not uniform.Problems such as the following aspects:

1, the construction cost is high:The construction and maintenance of power exchange station need a lot of capital investment, including equipment purchase, site lease, personnel training, etc. In addition, with the continuous expansion of the electric vehicle market and the increasing number of models, the power exchange station needs to be continuously upgraded and expanded to meet the needs of different brands and models, which further aggravates the cost pressure.

?2. Limited penetration rate:At present, the number of stations that can provide power exchange services in the market is relatively small and unevenly distributed, which leads many electric vehicle owners to find suitable power exchange stations when they need to charge, thus affecting their car experience.

3, technical standards are not uniform:The power exchange standards among different car companies are not uniform, which leads to the limited popularization and application scope of power exchange stations. If the structure of the vehicle, the shape and packaging of the battery are not unified, it is impossible to change the electricity.

4, security issues:The power battery will be attenuated, and if the battery state cannot be guaranteed to be unified, it will bring security risks. In addition, how to ensure the safety of the battery in the process of power exchange is also a problem that needs to be solved.

5. Operation mode and charging standard:Reasonable operation mode and charging standard are the key to the comprehensive promotion of the whole power exchange mode. At present, these problems have not been well solved.

6. Insufficient policy support:Although the government has played an important role in promoting the construction of charging facilities, the promotion of power exchange system and mode needs more policy support and market guidance.

Future development trend of power exchange system

The future development trend of power exchange system mainly includesTechnological innovation, policy support, business model innovation and extensive application scenariosThe expansion of. ?

I. Technological innovation

1, battery standardization design:With the progress of battery technology, the battery will be standardized in the future, and different brands of new energy vehicles will adopt unified battery specifications and interfaces, which will greatly promote the popularization of power exchange mode, reduce operating costs and improve service quality.

2, technological innovation and intelligent management:With the development of technology, the power exchange system will become more intelligent and efficient. Through the Internet of Things (IoT) and artificial intelligence (AI) technologies, the power exchange station will be able to monitor the battery health status in real time and optimize the energy storage and power exchange process.

Second, policy support

1. Government policy support:The government will continue to increase its support for new energy vehicles, and introduce more policies to support the power exchange mode, including subsidies and tax incentives, so as to encourage enterprises to invest in research and development and promote the power exchange mode.

2. Infrastructure construction:The government will increase investment in the construction of charging facilities and power exchange stations to provide strong support for the development of power exchange systems.

Third, diversification of business models

The power exchange industry is not limited to providing battery replacement services.Related enterprises will explore more value-added services.These may include cooperation with public transportation and logistics industries, or providing comprehensive services such as car cleaning and vehicle inspection. This diversified business model can not only increase revenue sources, but also enhance customer stickiness.

Fourth, the expansion of extensive application scenarios

1, the field of electric vehicles:The power exchange system can prolong the battery life and promote the popularization of electric vehicles.

2. UAV field:The power exchange system can prolong the life of the UAV, quickly resume the task and reduce the operating cost.

3. Smart home and standby power supply:The power exchange system can also play a role in smart home and standby power supply.

In a word, the future development prospect of power exchange system is broad, and technological innovation, policy support and business model innovation will continue to promote its development.And is widely used in more application scenarios.

Digital monitoring and operation and maintenance solution of charging and replacing power station

9.1. Equipment Configuration and Networking Scheme

On-site box substation equipped withAnkerui microcomputer protection, harmonic detection, multifunctional instrument, wireless temperature measurement, reactive power compensation controller and intelligent capacitor compensation device.. These devices are connected to the intelligent gateway ANet-2E4SM through RS485 bus, and uploaded to the operation and maintenance management platform of Weilai charging and replacing power station through 4G network. The specific equipment configuration and networking structure are shown in the figure.

Configuration of Intelligent Device in Box Substation of Charging and Replacing Power Station

Structure diagram of field equipment networking

9.2. Equipment Selection Table

9.3. Intelligent Gateway and Platform

In view of the fact that Weilai has established the operation and maintenance management platform for charging and replacing power stations, the box transformer data in this project has passed.ANet-2E4SM intelligent gateway for acquisition., and upload to the platform according to the data format specified by Weilai Transportation Management Platform. The intelligent gateway has built-in embedded system, which integrates many functions such as local data acquisition, logical judgment, protocol conversion, breakpoint continuation, data encryption and protocol customization, ensuring seamless docking with the superior platform.

Ankerui Acrelcloud-1000The power operation and maintenance platform can also meet the operation and maintenance management requirements of box transformers.. The platform can access thousands of users’ substation data. The data it collects covers the electrical parameters and environmental information of the substation, such as current, voltage, power, switch state, transformer temperature, environmental temperature and humidity, water immersion, smoke concentration, video monitoring and access control system. Once an abnormal situation occurs, the platform can send an alarm signal through SMS and mobile application within 10 seconds. In addition, the platform also supports sending tasks to operation and maintenance personnel through mobile applications, and tracking the implementation of tasks by Beidou positioning system to realize closed-loop management, thus improving operation and maintenance efficiency and ensuring that potential defects are discovered and handled in time.

9.3.1 Electric Power Detection

The operation and maintenance platform collects the data of box transformer and distribution system through 4G network, including current, voltage, power, electric energy and switch state, and grasps the real-time and historical data of box transformer.

9.3.2 Electric Energy Statistics

Based on the time-sharing power of Peak Pinggu, the power consumption and electricity cost in different periods are counted, and daily, monthly and annual reports are formed. Through year-on-year analysis and comparison, it is convenient for users to calculate operating costs.

9.3.3 Abnormal alarm

Box transformer current, voltage, power, switch state, transformer load rate and winding temperature, electrical contact temperature, environmental temperature and humidity, smoke, immersion, video, access control information, and alarm information will be sent to the operation and maintenance personnel through APP and SMS in case of abnormal situation.

9.3.4 Operation and Maintenance Management

It can help users to make inspection plans, record the defects found in inspection, distribute work orders to eliminate defects, check the inspection trajectory positioning and repair progress, feedback the task progress, etc., and close the operation and maintenance management process.

9.3.5 User reports

The operation and maintenance platform automatically generates a diagnosis report on the power consumption and operation of users, provides periodic diagnosis reports on the operation of the distribution system, summarizes the problems existing in the distribution system, and puts forward suggestions for improvement.

"With the online’ intermediary supermarket’, our owners can easily and quickly choose an intermediary service agency with reasonable price and intimate service, which is very convenient for foreign enterprises." Ms. Wang, who used to find the evaluation company through the "intermediary supermarket", said that it was time-consuming and laborious to go to many places and compare qualifications and prices repeatedly.

In recent years, the district administrative examination and approval bureau has actively explored a new mode of project examination and approval service, comprehensively standardized and promoted the service of "intermediary supermarket", made full use of the advantages of centralized management, rich information and no face-to-face service of "intermediary supermarket", and solved the problem that it is difficult for project owners to find intermediary services.

"Intermediary supermarket" service refers to an online trading platform that provides fair, just, unified and efficient administrative examination and approval intermediary services for clients and intermediaries. Various intermediary service agencies such as EIA preparation, planning preparation and engineering consultation are classified and "placed" like goods, and the service content, charging standard and contact telephone number are clear at a glance. Enterprises can choose their favorite intermediary agencies to provide services for themselves like visiting Tmall online stores. At present, there are 114 intermediaries in the region, 110 intermediaries have been registered, and 77 contracts have been signed through "intermediary supermarkets".

The owner unit publishes the procurement announcement through the official platform, and all qualified intermediaries can participate in the bidding. The owner unit will review and screen the bidding companies, select the interested units and sign the contract online, and finally reach a deal. "The use of the’ intermediary supermarket’ is very convenient. The procurement subject and intermediary agencies do not need to go to the scene, and all of them are handled online, avoiding the cumbersome procedures such as multi-party consultation and business negotiation, effectively reducing our time and cost." Mr. Li, the person in charge of the aquaculture factory that just used the "intermediary supermarket", said.

The district administrative examination and approval bureau implements the service mode of "intermediary supermarket+deputy agent", provides one-to-one guidance for the inevitable problems encountered by enterprises in the process of selecting and handling, actively connects with intermediaries and procurement subjects, assists in solving various business problems encountered in the process of registration, entry, selection and evaluation, helps enterprises and procurement subjects to successfully complete transaction services, realizes the goal of online non-meeting service, and provides more convenient channels for the people to handle affairs and creates a better one.

In the next step, the district administrative examination and approval bureau will continue to increase the service of online "intermediary supermarkets", take the use experience and suggestions of the enterprise masses as the guide, innovate, further enhance the standardization and efficiency of intermediary services, reduce transaction costs, promote the reform of government services, continuously improve the quality and speed up, and enhance the experience and satisfaction of the enterprise masses.

　　[car home in-depth investigation] It has been a long time since the last battery investigation, and now we have picked up this topic again. The models surveyed in this issue are still several popular models listed recently, including compact cars, medium-sized cars and SUVs. Next, let’s take a look at the battery performance of these popular models!

● Automobile batteries are divided into ordinary lead-acid (non-maintenance-free) batteries and maintenance-free batteries.

　　Batteries in vehicles are divided into ordinary lead-acid (non-maintenance-free) batteries and maintenance-free batteries. Ordinary lead-acid batteries have low cost, so distilled water needs to be added regularly to supplement electrolyte for maintenance to ensure normal use. The other is a maintenance-free battery, which consumes very little electrolyte and basically does not need to be supplemented with distilled water during its service life, making it more convenient to use. The service life of general maintenance-free batteries is about 4-5 years, and the price is higher than that of ordinary lead-acid batteries. However, with the development of science and technology, some brands of lead-acid batteries have made great progress than before, and their service life is not lower than that of maintenance-free batteries, and there is no need to replenish electrolyte regularly under normal use.

● How to distinguish between ordinary lead-acid and maintenance-free batteries

　　Ordinary lead-acid batteries need to replenish electrolyte regularly, so there is a unscrewing liquid replenishment port at the top of the battery. On the contrary, the maintenance-free battery does not, so the surface is flat. In addition, the batteries of many vehicles in the market are placed in dust-proof boxes, and the batteries can only be seen after opening the dust-proof boxes.

● Several important data of battery:

Rated voltage:In general, the voltage of household car batteries is 12V.

Capacity:It represents the amount of electricity discharged by the battery under certain conditions (discharge rate, temperature, termination voltage, etc.). Generally, the capacity unit of an automobile battery is Ah. For example, a battery with a capacity of 45Ah can continuously discharge for 45 hours if the continuous discharge current is 1A. The higher the capacity of the battery, the better, otherwise it will affect the use of automotive electrical equipment. Of course, the higher the capacity of the battery, the higher the price.

Low temperature starting current (CCA):In addition to the above two data, there is also a mark "CCA" on the battery, which indicates the starting current that the battery can provide to the engine at low temperature. That is, the value is the current discharged by the battery before the limit feed voltage when the battery is discharged at -17.8℃ for 30 seconds. For example, a 12V battery case is marked with CCA value of 450, which means that at -17.8℃, before the voltage drops to 7.2V, it can provide 450A current for 30 seconds.

● At present, common standards for naming commonly used battery models:

First, based on the national GB standard, taking the battery of model 6-QAW-54a as an example, the explanation is as follows:

6: It is composed of six single-cell batteries, and the voltage of each single-cell battery is 2V, that is, the rated voltage is 12V；;
Q: indicates the purpose of the battery, Q is the battery for automobile starting, M is the battery for motorcycle, JC is the battery for ship, HK is the battery for aviation, D is the battery for electric vehicle, and F is the battery for valve control;
A and W: indicate the type of battery, A indicates dry-load battery, W indicates maintenance-free battery, and if it is not marked, it indicates ordinary battery;
54: indicates that the rated capacity of the battery is 54Ah;
Corner A means the first improvement of the original product, and corner B means the second improvement after the name, and so on. (Note: adding D after the model indicates good low-temperature starting performance, such as 6-QA-110D).

Second, based on Japanese JIS standard.For example, the meaning of battery parameters with model "38B20L" is analyzed as follows:

38: Indicates the performance parameters of the battery. The larger the number, the more power the battery can store. (Note: the numerical value has nothing to do with the capacity)
B: code indicating the width and height of the battery. The combination of the width and height of the battery is represented by one of eight letters (A to H). The closer the letter is to H, the greater the width and height of the battery.
20: indicates that the length of the battery is about 20cm.
L: indicates the position of the positive terminal. Seen from the battery pole, the positive terminal is marked R at the right end and L at the left end.

Third, based on the German DIN standardFor example, the meaning of each parameter of the battery with model "CCA 660" is analyzed as follows:

CCA: indicates low-temperature starting current.
660: indicates that the low-temperature starting current value is 660 amps.

2013 Buick Excelle

　　Excelle is a veteran of the compact car market. In 2013, the manufacturer made a small change to it. Although the appearance changed little, it replaced a brand-new power system, which greatly improved its fuel economy. However, the manufacturer did not replace the battery of Excelle because of changing the power system, but still purchased the maintenance-free battery of the well-known brand ACDelco, with a capacity of 55Ah and a low-temperature starting current of 610A, which is enough for a 1.5-liter model. However, the price of this battery in Buick 4S store is not cheap, and 650 yuan is still much more expensive than the market price. In addition, the working hours in 50 yuan mean that if you choose to replace the battery for Excelle in 4S store, it will cost 700 yuan in total.

2013 Buick Angola ENCORE

　　Angola ENCORE is a small SUV launched by Buick in October 2012. Its appearance broke the market structure and further lowered the threshold of SUV, so that consumers with a budget of only 100,000 yuan can also buy a stylish, well-equipped, powerful and joint-venture SUV with a four-wheel drive system.

　　Buick Angola ENCORE uses a power combination of 1.4T+6AT, which has good acceleration performance and smoothness. The battery it uses is also from ACDelco (the specific model is unknown), but the capacity and low-temperature starting current are different from those of Excelle. It has a capacity of 60Ah, a low-temperature starting current of 438A, a 4S shop price of 605 yuan, and a working hour fee of 665 yuan in 60 yuan, which is cheaper than Excelle.

2013 Shanghai Volkswagen New Santana

　　Santana is a famous name for Chinese people. However, the new Santana launched in 2012 has nothing to do with the "previous generation" models in essence. It is a product from PQ25 platform, and should belong to the same level as POLO. However, due to its long body size and wheelbase, we will classify it as a compact car for the time being. It has been proved that its interior space is not less than that of most compact cars.

　　The new Santana has two power options: 1.4-liter and 1.6-liter, and the 6AT gearbox is one of its highlights. The new Santana adopts valta 5KD 915 105C battery, which is consistent with models such as POLO and Skoda Jingrui. The capacity of this battery is 51Ah, the low-temperature starting current is 480A, the price of 4S is 622 yuan, the working time is 70 yuan, and the total cost of replacing the battery is 692 yuan. In addition, because there is a circuit board on the battery surface of Volkswagen series models, it is a little troublesome to disassemble and replace it.

2012 Speed Sharp 1.5T Model

　　BYD is the first manufacturer in its own brand to adopt turbocharged engine and dual-clutch gearbox technology, and its brand influence has been greatly improved. Speed sharp has won the attention of the media and the public with its unprecedented remote control technology. Although there is still a lot of room for improvement in the ride comfort of the fast-sharp dual-clutch gearbox, the power of the 1.5T turbocharged engine is excellent. Coupled with its rich configuration performance, BYD Speed Sharp’s comprehensive strength is quite strong.

　　Because of its high configuration, remote control technology and remote engine starting technology, it has higher requirements for batteries. The original factory of Surui is equipped with valta 80D26L battery, with a capacity of 70Ah and a low-temperature starting current of 600A. These parameters are completely comparable to those of medium-sized cars. However, its battery price is relatively expensive. The price quoted by the 4S shop is 654 yuan, and the total cost of replacing 30 yuan is 684 yuan.

2013 Dongfeng Citroen C4L

　　Although C4L has not been listed for a long time, it has left a deep impression on people with its powerful power of 1.6T and spacious and comfortable ride. C4L is a rising star in the compact car market. Its biggest highlight is the 1.6T engine jointly developed by PSA and BMW. This engine was also awarded the title of "Top Ten International Engines in 2013" some time ago.

　　The battery of C4L is almost covered by a whole circuit board, so it is difficult to see the brand and parameters of the battery from the outside. Through our contact with the 4S store, we know that the battery used in C4L is no different from the previous Sega, both of which are Bosch L2-400 maintenance-free batteries, with a capacity of 60Ah and a low-temperature starting current of 640A. The price of accessories is 490 yuan and the working hours are 96 yuan, and the total price is a little more expensive than Sega.

2013 Dongfeng peugeot 3008

　　3008 is the first SUV launched by Dongfeng Peugeot. From the current attention and sales volume, it should be regarded as a successful model. I think its success is first attributed to the correct positioning of the 3008 by the manufacturer. Although it is derived from the compact car platform, the space and workmanship are not worse than those of mainstream SUVs such as CR-V and Tiguan, and the price is lower than them, so it is not surprising that the 3008 sells well.

　　3008 and C4L use the same power system, so their batteries are basically the same, which has been verified in the previous Sega and 308. Under normal circumstances, Citroen or Peugeot will have two battery suppliers, Bosch and Camel. The C4L introduced above uses Bosch’s battery, and the 3008 we investigated this time just uses the camel battery of the same L2-400 model, with the same capacity and low-temperature starting current as C4L, which are 60Ah and 640A respectively. However, the price of batteries in Peugeot 4S shop is relatively cheaper, with the price of accessories in 480 yuan and the working hours in 100 yuan, totaling 580 yuan.

2013 GAC Toyota Camry

　　The seventh generation Camry used tougher lines, which made it look younger and more athletic. However, its appearance doesn’t seem to get much recognition, so that its sales volume is not as good as before. In fact, if you carefully observe this generation of Camry, you will find that it has made great progress in appearance and interior texture. More importantly, the 6-speed automatic manual transmission has finally become the standard configuration of the 2.5-liter model (except the hybrid version). On the whole, its overall strength has been significantly improved compared with the previous generation.

　　Japanese cars have always used local brand parts, and almost all batteries are maintenance-free. For example, Camry uses Hitachi brand non-maintenance-free batteries, with a capacity of 65Ah and a low-temperature starting current of 630A A. From the parameter point of view, this battery is not bad. In fact, 4S stores call this battery "maintenance-free and refillable", and its service life is about 4-5 years, which is equivalent to maintenance-free batteries. According to the 4S shop, this battery does not need to be added with electrolyte during its service life under normal use. However, if it is not used properly, such as when the vehicle is parked for a long time, or listening to music when the engine is turned off, this battery may lose power and need to be supplemented with electrolyte when necessary. The quotation of this battery 4S shop is 695 yuan, and the replacement time is 80 yuan, with a total cost of 775 yuan.

2013 Dongfeng Nissan Teana

　　As another best-selling Japanese car in the medium-sized car market, Teana has also undergone a generation change in the previous period. In addition to the new design of the exterior and interior, the biggest change of the new generation Teana is to replace the previous 2.5-liter V6 engine with a 2.5-liter L4 engine. Although two cylinders were reduced, the new L4 engine did not lose to the previous V6 engine in terms of parameters, and the fuel economy was improved.

　　The new Teana adopts the non-maintenance-free battery of GS (Uni-President) brand, its capacity is 62Ah, and the low-temperature starting current is 582A. Compared with the Camry just introduced, Teana is slightly worse in battery parameters, but it will not affect the daily car. In addition, the price of battery replacement in Nissan 4S shop is slightly lower than that of Camry, in which the price of accessories is 590 yuan and the working hours are only 48 yuan.

2013 Chevrolet Mai Rui Bao

　　Although Chevrolet Mai Rui Bao has a history of many years in the United States, it is still a young model that just debuted in China. However, in the highly competitive medium-sized car market, Mai Rui Bao has gradually gained a foothold with its balanced strength and high cost performance. It is indeed a model worthy of recommendation, because its price is comparable to that of compact cars such as sagitar, but it is an out-and-out medium-sized car.

　　Mai Rui Bao uses a sail brand maintenance-free battery with a capacity of 60Ah and a low-temperature starting current of 525A. This battery is priced at 452 yuan in the 4S shop, and the working hours are paid in 90 yuan, so the overall cost is not expensive.

Summary:

　　At present, most family cars on the market use maintenance-free batteries, while only some Japanese manufacturers insist on using non-maintenance-free batteries. However, even today’s non-maintenance-free batteries, in fact, under normal use, there is no need for users to regularly replenish electrolyte, which is as convenient to use as maintenance-free batteries, and their service lives are similar. Judging from the models we investigated in this issue, the batteries they use can reassure consumers in terms of brand and parameters. Only with the increase of purchasing cost, the quotation of 4S stores for batteries is generally high, which is about 200 yuan on average. Therefore, we suggest that if your vehicle has exceeded the warranty period, it is more cost-effective to replace the battery in some regular auto repair shops, provided, of course, that the replaced battery must match the vehicle. (Text/Figure car home Zhang Ziyi)

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High power generation fraud type reminder

The "May Day" holiday is approaching. Every holiday, fraudsters are also eager to move. New scams are constantly emerging, old scams are constantly updated, and fraud routines are constantly emerging, which makes it impossible to prevent. To this end, Qingcheng anti-fraud summarizes the following types of high-incidence fraud, and asks the general public to be vigilant and not to be deceived.

Brush rebate category

Fraudsters will post part-time brushing praise tasks through SMS, phone calls, various social software, short videos and mailing fake lottery tickets, and pull victims into designated Alipay and WeChat group chats.

When the victim joins the group chat, the fraudster will entice the victim to download the fake brushing APP to do the task. At the beginning, fraudsters often cheat the trust of the victims by distributing some small tasks of praise and attention. When the time is ripe, they will guide the victims to continuously increase their investment.

Once the victim starts to do a large amount of "advance" work, the fraudster will refuse to refund the money to the victim on the grounds of needing to do a single task or entering the wrong bank card number, and ask the victim to continue to do the task to correct the so-called "mistake" until the victim realizes that he has been cheated.

Police tips

It is illegal to swipe the bill online. Don’t trust the information of part-time swiping the bill to get the rebate on the internet, and don’t trust the liar’s refund promise with luck to avoid a serial scam.

Flight return and change category

Fraudsters will pretend to be airline customer service, send text messages or make phone calls, claiming that the flight booked by the victim is about to be postponed or cancelled, and they should change the ticket or refund the ticket to the victim.

Once the victim believes it, the fraudster will ask the victim to provide the Alipay account number or bank card number, and then ask the victim to verify the personal credit information on the grounds that the provided account number or card number cannot be collected. After that, the fraudsters will let the victims download various video conference apps, open conference rooms, and ask the victims to turn on the screen sharing function to help the victims "verify the capital". Usually, the victim is required to open his own mobile banking, check the account balance, and let the victim transfer all the cash to one of his bank cards.

During this period, fraudsters will steal the victim’s bank card number, bank card password, SMS verification code and other important information through the screen sharing function, and take the opportunity to steal the victim’s bank deposit. Sometimes, victims are also required to transfer all their deposits to a capital verification account claiming to be the People’s Bank of China, and claim that they will automatically return the money after capital verification. As everyone knows, the victim’s funds are gone forever.

Police tips

The airline ticket refund and change business must be handled by logging in to the airline’s official website or calling the official phone number. You should not blindly trust the strange customer service phone number. If necessary, you can call the official phone number of the relevant airline to confirm. Remember not to turn on screen sharing and remote collaboration easily. This operation will make you reveal important personal information, such as bank card account number, password, mobile phone verification code, etc., and make your property suffer losses.

Pretending to be an enterprise customer service cancellation service class

Fraudsters will pretend to be corporate customer service to make a phone call, claiming that due to the victim’s misoperation, they have opened the services such as Million Guarantees, JD.COM White Slips, VIP, etc. If they don’t cancel the above services, they will generate additional charges every month to induce the victim to download the designated conference APP, participate in video conferences, and open screen sharing.

Subsequently, the fraudster will induce the victim to transfer the money in his bank card to the designated "safe account" on the grounds of identity authentication, ensuring the safety of funds, and closing the automatic deduction fee, so as to be cheated.

Police tips

If you receive a call from a well-known customer service company, don’t be credulous, let alone transfer money and remit money. Services such as Million Guarantees and JD.COM White Stripes are provided by the government free of charge. Even if they are charged, they should be verified with the official customer service in the APP.

False procurement category

Fraudsters pretend to be purchasing personnel of various enterprises and units, and contact merchants by telephone and WeChat, claiming to purchase a large number of goods from merchants during the holiday season.

During the procurement of materials, fraudsters will ask for a "special material" and ask the victim to buy related items from the designated "special material supplier". (During this period, in order to gain trust, fraudsters will also provide forged documents with official background, contracts and false transfer screenshots.)

The so-called "special material supplier" will let the victim pay the deposit or payment in advance on the grounds of paying first and then shipping, so as to achieve the purpose of defrauding money.

Police tips

Enterprises and units will strictly implement the contract procedures when purchasing materials, so don’t trust this "air-to-air" telephone order and advance payment method. You can’t remit money easily in any situation where you pay the deposit first and then do things. You must try to verify the identity of the other party before you think twice.

False investment and financial management

This kind of fraud is often that fraudsters first master the special groups with investment and financial management needs through the Internet, and then carefully set up scams to implement accurate fraud. The main ways are: relying on various social and video software to actively contact the victims and build trust, and some in the name of the investment master team; Some play the cards of love and marriage, and then commit fraud by mastering inside information.

Some fraudsters will also ask the victims to help operate their own investment accounts, and take the opportunity to let the victims see the high returns (these investment websites have been controlled by fraudsters and can control the background profit data at any time), so as to induce the victims to actively participate in the investment.

Subsequently, the fraudster will induce the victim to invest in the false investment platform, and the small amount of investment in the early stage will get high returns. After the victim has invested heavily, the fraudster will refuse to withdraw the cash from the victim for various reasons, such as asking the victim to pay high personal income tax, being found to have insider investment, paying a deposit, etc., and asking the victim to continue to transfer money until the victim realizes that he has been cheated.

Police tips

Remember, there will be no pie in the sky, and don’t believe in the scams that netizens say, such as "make sure you don’t lose money", "low cost and high return", "expert tutor’s advice" and "lovers build a love nest together" When investing in wealth management, you must download the investment APP that can be found on the official application platform. Anyone who asks you to transfer money to a personal account or the corporate account that asks for transfer does not match the name of the platform is likely to be a "black platform" forged by fraudsters. Be vigilant.

Pretend to be leaders, relatives and friends

Fraudsters will impersonate leaders, relatives and friends through hacking, forging friends circle and imitating accent tone, and make up false reasons such as buying air tickets, paying tuition fees and transferring fees to induce victims to transfer money to them.

During this period, in order to enhance the confusion of their own fraud, fraudsters will also forge false screenshots of receipts and payments, chat records and other supporting materials, thus reducing the psychological preparedness of victims.

Police tips

When chatting with leaders, relatives and friends on the internet, when it comes to borrowing and remittance, you must verify the identity of the other party in person or call me, and then make a decision after confirming the true identity.

Pretending to be responsible for corporate finance.

The fraudsters will pretend to be the relevant social accounts of corporate finance leaders, set up a temporary work group, and pull the accounting cashier of the enterprise into the group chat (except the accounting cashier, the accounts of other corporate leaders in this group are all impersonated by fraudsters).

During this period, fraudsters will imitate the tone of business leaders in the group and ask the company’s business to be discussed in the group in the future. After that, the accountant cashier will suddenly be asked to transfer money to the "designated account" on the grounds of paying the contract money to the partner.

Police tips

When the leader asks for transfer or remittance, be sure to confirm the real identity of the other party by telephone or meeting to verify before proceeding to the next step. Do not transfer or remit money easily.

Original title: "May 1 High Power Generation Fraud Type Reminder"

Read the original text

The biggest highlight of Wuling Binguo is its design. This car adopts a round shape of retro style, with four fashionable body colors, such as milk coffee white, bright night black, aurora green and ice berry powder, which can be recognized at a glance. In the front of the car, Wuling Binguo uses round headlights and chrome-plated mesh to create a retro and lovely feeling. On the side of the car body, the lines of Wuling Binguo are simple and smooth, and there is no extra decoration, which highlights the characteristics of purity and practicality. In the rear part, Wuling Binguo also continued its sleek design style, with round taillights and rear fog lights, as well as hidden rear door handles, which made the whole rear look clean and neat.

In addition to the design, another highlight of Wuling Binguo is its spatial performance. Although this car is only 3.950 meters long, 1.708 meters wide and 1.58 meters high, it has a wheelbase of 2.56 meters and a curb weight of 990 kilograms, which means that it is light and flexible, and it also provides enough spacious seating space and cargo space. According to official data, the rear seats of Wuling Binguo can be laid down at a ratio of 4/6, which can meet various needs of daily life and travel.

As a new energy vehicle, Wuling Binguo also has a good performance in power. This car has introduced two motor configurations, 30kW and 50kW respectively, with maximum power of 41 HP and 68 HP and maximum torque of 95 Nm and 150 Nm respectively. These two kinds of motors are matched with single-speed gearbox, and both adopt the layout of front drive. In terms of battery life, Wuling Binguo also provides two battery configurations, 203km and 333km respectively. Both batteries use ternary lithium batteries, and both support fast charging and slow charging functions. According to official data, in fast charging mode, Wuling Binguo can fully charge 80% of the electricity in 30 minutes.

What are the disadvantages of Wuling Binguo? I think one of the most obvious shortcomings is its safety performance. Although this car is equipped with ABS, EBD, ESP and other active safety systems, as well as passive safety equipment such as front double airbags and side air curtains, its body structure and materials are not very tough, and its weight is relatively light, so in the case of high-speed collision, its protection ability may not be ideal. In addition, Wuling Binguo’s interior design and materials are relatively simple, and there is not much sense of technology and luxury, which may affect the purchase intention of some consumers who have higher requirements for interior decoration.

Is Wuling Binguo worth buying? I think it depends on your needs and budget. If you are a young man who has certain requirements on appearance and likes retro and lovely style, if you are a family user who needs space and needs to carry people or goods frequently, if you are a city user who doesn’t have too high requirements on power and endurance and only needs to meet daily commuting and short trips, if you are an economic user who is sensitive to price and wants to enjoy new energy subsidies and tax-free concessions, then I think Wuling Binguo is a good choice. The price range of this car is 59,800-83,800 yuan, of which the highest 333km Linxi Interconnect is also equipped with an intelligent interconnection system, which can realize functions such as remote control of mobile phones, voice control, OTA upgrade, etc., and improve driving convenience and fun.

If you want to buy Wuling Binguo, I suggest that you choose 333km Express or 333km Pleasant. Compared with the 203km light and 203km comfortable models, these two models have obvious improvements in motor power, battery capacity and cruising range, and there is not much difference in price. If you want more technology configuration, then you can choose 333km Linxi Interconnect, which has unique advantages in intelligent interconnection system, but you should also consider that its price is relatively high, and its intelligent interconnection system may have some compatibility and stability problems.

Fourth, the comparison of Wuling Binguo

Let’s take a look at the performance of Wuling Bingo in the same class. I chose two models that have a certain competitive relationship with them for comparison, namely BYD Seagull and Panda mini. These two models are small pure trams, and both have lovely designs and high cost performance.

From the price point of view, the price of Wuling Binguo is relatively high, but it also provides higher performance and configuration, so the cost performance is not low. The prices of BYD Seagull and Panda mini are relatively low, but they also provide low performance and configuration, so the cost performance is not high.

V. Summary

Through the above analysis, we can draw the following conclusions: Wuling Binguo is a large-space five-door pure tram with a retro and lovely style. It has a good performance in appearance design, space performance and power endurance, and it is also equipped with an intelligent interconnection system, which improves the convenience and fun of driving. Although its price is relatively high, it also provides higher performance and configuration, so the cost performance is not low. If you are a young man who has certain requirements on appearance and likes retro and lovely style, if you are a family user who needs space and needs to carry people or goods frequently, if you are a city user who doesn’t have too high requirements on power and endurance and only needs to meet daily commuting and short trips, if you are an economic user who is sensitive to price and wants to enjoy new energy subsidies and tax-free concessions, then I think Wuling Binguo is a good choice.

Zhao yajing

As soon as the heat brought by the award passed, the eco-house fell into a state of lack of attention. The government has still not promoted eco-houses as model houses. In 2012, the director of Anji County New Rural Construction Guidance Center said: "Ren Weizhong’s concept is modern and too avant-garde. Maybe people with high cultural level can appreciate it, but the people in Anji have not reached this level."

This may be true. Farmers still build villas and do not agree with Ren Weizhong’s ecological houses. In 2009, patches of cement-built farmers’ relocated houses and villas surrounded the eco-house base into an island.

Ren Weizhong teaches "Tujing" in Zhongnanshan, Shaanxi. Image source: WeChat WeChat official account, Wutuwu Township (2017)

Spreading rammed earth technology in "mud school"

But Ren Weizhong didn’t give up. As the saying goes, there is a thousand-year-old earth wall, but there is no hundred-year-old brick wall. Since 2012, he has calmed down and devoted himself to doing a lot of experiments to study the performance of rammed earth and refine its ingredients.

He tried different proportions of rammed earth materials for each house in order to find out the best structural proportion of materials and solve the common wall cracking problem in traditional rammed earth buildings. The low rammed earth wall in the yard of the base has different colors and textures, which is also the experimental body of rammed earth performance. In addition, he also explored the use of soil, developed the use of light clay as thermal insulation material, and tapped the decorative properties of soil. The plaster mixed with lime and soil developed by him shows the touching texture of Italian plaster.

From 2005 to 2014, the eco-house had no income for ten years, and Ren Weizhong was unwavering. After three years of research and development experiments, in 2015, he sold the first mud plastering material, and the situation opened. He began to serve as the soil technical director of some well-known homestay projects, and his rammed soil technology is also being used in Qinghai ancient city protection project. Rammed earth materials are also used in the memorial hall where the theory of "two mountains" was published by General Secretary of the Supreme Leader of Yu Village in Anji.

"I remember when I was a child, my house was expanded, and the wall material was mud, and the soil as a raw material was dug around the house, and the transportation distance was only tens of meters. This material can be transported by hand. A few years after the house was built, the pit that we had dug was slowly filled with the baptism of years, and no traces left by earth borrowing were found at all. After being abandoned, the earthen houses will be razed to the ground after being eroded by wind and rain, so it is difficult for you to find the ruins of these old houses. Everything comes from the earth and returns to the earth. This example fully proves the harmony between man and nature, and the construction process of this earth house has almost no energy consumption and will not pollute the environment. "

A large amount of construction muck is produced on the construction site, which becomes the source of building materials for rammed earth houses.

Some professionals question that the clay used in rammed earth construction will cause the loss of valuable clay resources. Ren Weizhong explained that rammed soil comes from the residual mud and dregs of the construction site, which is neither cultivated soil nor clay, but a kind of sandstone soil. "The waste soil residue on these construction sites is worthless when it is not used, and it even becomes a stacking problem." Ren Weizhong said.

In 2015, the muck mountain in Shenzhen Guangming New District Industrial Park collapsed, causing 22 buildings to be buried, causing a particularly serious safety accident. The problem of the acceptance and accumulation of construction dregs has attracted the attention of the State Council. There are also building dregs in rural areas now, so rammed earth houses can digest the wastes from these construction projects.

In the past, houses were built in rural areas, so a big pit was often dug at the head of some villages, and water was poured into the pit to turn it into a pond for raising fish. But today’s soil is not from the pit at the head of the village, but from the foundation pit of the construction site. He often emphasizes that building a house is to borrow soil from nature, and finally the house is demolished and the soil is returned to nature.

　In recent years, more and more people know about Ren Weizhong, and the ecological environment has been paid more and more attention by the government and all walks of life. Every time I go to Jianshan Village to see him, there are always visitors. He also accepted apprentices and hired people to assist in the daily operation of the ecological base. When there are many guests, his wife will go to the kitchen to help cook, and his son will play in the base yard.

He is no longer a "army of one". He has his own family and successfully established his own team. These people include both local villagers and young people from other places. These workers also look very hardworking and simple. When they sat around a table for dinner at noon, they showed the harmonious atmosphere of the family. The main hall in Room 1 now doubles as a restaurant for visitors, and all the lectures are transferred to Room 2.

House No.2 Image Source: Jushe Image WeChat WeChat official account (2019)

The two-story stone-wood house facing the gate of the base is the second ecological house, and it is also a house that makes me shine at the moment. On the second floor, a large area of windows facing south is opened to introduce sufficient light. The scale of this house is friendly and pleasant, and the colors of old wood, old tiles and stone rammed earth are naturally mixed together. The whole house is like an antique gentleman, low-key and modest. Well-proportioned proportion and classical and simple temperament made me realize for the first time that Ren Wei, who looks like a native soil, actually has a high aesthetic taste.

House 2 is also the most sacred house in Renwei Center, which he called "Mingtang". The upper floor of the house is used for lectures and training, and the wooden frame comes from the old house where the captain’s family used to be produced. The ground floor is used to show the research results of rammed earth building materials. Like the mineral exhibition platform of the Natural Museum, rammed earth blocks with different proportions are carefully cut into small square bricks and lined up neatly. Mud has become the protagonist of this exhibition hall, because it is the soul of the "mud school".

Rammed earth R&D materials exhibition platform Image source: Wechat WeChat official account, Wutu Wuxiang (2019)

"The reason why I am particularly fond of soil is mainly because soil is a particularly environmentally friendly material. Efficient and wasteful building activities in the industrial age may make all kinds of resources in short supply, especially the ecological damage and environmental pollution built in the process of resource mining and material processing cannot be tolerated. However, the earth is the only one with the richest soil, and the soil building will not change the performance of the soil, so it can be recycled. It’s just that at present, we lack common sense and have misunderstandings about soil. It can be said that the purpose of practice is partly to vindicate soil, and soil can also build high-quality houses. As for why mud buildings are rarely taken seriously, it is mainly unprofitable behind them. "

Ren Weizhong’s ecological residential practice focuses on rammed soil, which is not only the natural result of exploring ecological construction, but also the result of the overall environment.

One summer in 2007, Gao Tiancheng, a South African, rented a villager’s empty house in Sanjiuwu, Laoling Village, Moganshan Town, and renovated it with the concept of low carbon and environmental protection on the basis of not changing the original house structure and destroying the overall style. He established the bare-hearted hometown of homestay, which became the birthplace of "foreign music" in China, and opened the prelude to the rapid development of homestay industry in Moganshan. In the process of setting up a homestay, Gao Tiancheng went deep into the rural areas of Zhejiang to learn about the local construction ecology. He also visited Ren Weizhong’s ecological house. In 2015, the hotel industry in Moganshan entered its peak period, and the Moganshan effect drove the hotel fever in the country.

Boutique B&B caters to the mentality of the urban middle class returning to nature and pursuing a high-quality life. Rammed soil has become a popular building material for homestays. This makes rammed earth technology have its place. More and more people ask Ren Weizhong about rammed earth construction technology.

In 2016, he changed the name of "Jianshan Ecological House" to "Mud School" and began to teach students. In August 2016, the first phase of rammed earth training started. Ten times a year, about 180 students can be trained every year. Training fees are priced for public welfare, only to spread rammed earth technology. Some other students stayed and became his assistants.

In 2017, Ren Weizhong won the public welfare grant of "March towards ecological civilization and pay tribute to environmental pioneers" jointly sponsored by China Environmental Protection Foundation and China Foundation for Poverty Alleviation, to train rural craftsmen, returnees and school students, and plans to replicate the model of mud schools in different places. Therefore, in the past two years, he has become more and more busy, and the workers in the "clay school" workshop are busy from sunrise to sunset. After the mud school became famous, the villagers in Jianshan Village said that it was finally set up by him, and the feng shui of this base was good.

Ren Weizhong teaches at the rammed earth construction workshop. Photo source: Shantian Academy WeChat WeChat official account (2019)

Rammed soil has become "noble", pushing up the cost of building houses. I asked Ren Weizhong, who is bent on building houses for farmers, how to solve this problem? He said that rammed earth is expensive in manpower, and the traditional way of building houses in rural areas of China was completed by people in the village helping each other, which can be solved by restoring the way of building houses by mutual assistance. However, due to the loss of young people in rural areas, it seems that the road to restoring mutual-aid housing is long. But the historical process is mysterious and unpredictable. Who knows? Once a thing is regarded as advanced, it will go through the process from the small crowd to the public. Ren Weizhong may have taken a curved road to save the country.

In order to let people experience rammed earth buildings personally, Ren Weijian built House 3. There are four rooms on the upper and lower floors, which provide accommodation for the trainees. The whole house adopts simple modern design, with rammed earth for bearing.

In June of 2020, I was lucky enough to stay for one night. The thin long windows have a European flavor, and the simplest bed and chairs make me feel like I walked into a simple European country cottage. There are only three kinds of building materials in the room: wood, mud and glass. There is no superfluous decoration. Directly exposed mud wall, meet each other with sincerity, the yellow and gray tone, like the warm chest of the earth, feels delicate and smooth, and looks like a texture between cement and paint. The room exudes the aesthetic temperament of simplicity and minimalism.

It’s just an ordinary guest room, but it reminds me of Donald Judd, an American minimalist artist, who used metal plates to create meaningless object forms, showing the high purity of materials. This purity is exactly what I felt in Room 3. But unlike Donald Judd, all the object forms and spaces here point to the essence of soil.

Zhao Yajing’s photo of the facade of House No.3 (2020)

In the early morning, I got up early, and the freshest air in the yard came to my face. There are no less than 10 kinds of vegetables planted in 5 rows, 6 rows and 30 squares. Walking along the path of the yard, the ground is as hard as cement, but it is a dirt road. The two jars of lettuce on the outside of the vegetable garden are full of green, and the cucumber vines on the inside have already been picked out. A line of tomatoes was planted along the low wall, and the fresh red fruits hung down from the leaves. Going over a row of low walls, Ren Weizhong designed a checkerboard-style vegetable bed. Step by step, growing vegetables is like playing chess. Not far from the granary, chicken coop and handmade tofu workshop. Ren Weizhong explained the original intention of designing these auxiliary facilities. "In my mind, the village should first be self-sufficient economically, at least food can be produced by itself, instead of relying on the market, and then it can establish a resource cycle, do not produce garbage, and reduce the burden on the environment."

Checkerboard Garden Ren Weizhong/Photo in 2019

He integrated biogas and solar energy into the energy used in the ecological house, and also improved Anji’s traditional iron pot bath, which is a multi-purpose firewood stove for burning pig grass and bathing in the pigsty.

At the beginning of the century, families in Anji Mountain Village did not have shower rooms. Firewood stove and iron pot bath are rural living facilities that make us Shanghai high school students feel incredible. People wash in the pot and the firewood burns under it. Isn’t that person a stewed pig’s trotters? The students are all afraid to try iron pot bath. Only one naughty boy tried it. He excitedly reported the first bath experience, and it was very comfortable to bathe in an iron pot with a diameter of nearly one meter. However, when he was drunk, the pig on the side screamed, which scared him to start from a pot of water and ended in a mess. The improved iron pot bath still retains the firewood stove, but it is moved from the pigsty to the bathroom. Ren Weizhong’s son became the first person who tried to wash the pot, and the little guy sang with the happy bath water. I found that his interior design was inspired by traditional rural life. He often mentions the details of his childhood life. In a sense, Ren Weizhong acted like an independent contemporary artist, building an ideal "Utopia" on the barren beach.

The dream of an agricultural ecological village with unchanging initial intention

"I have always had the greatest wish, that is, to build an ecological village where people and nature live in peace, and no longer let buildings that consume a lot of cement and steel bars and are not in the middle of the ocean occupy precious land. This idea is my dream that I have been struggling for more than ten years."

Bird’s-eye view of vegetable garden in house 3 (2020) Zhao Yajing

On that midsummer night 19 years ago, in the farmhouse yard at the foot of the mountain in Tongli Village, Ren Weizhong talked to my classmates and me about this dream of building a village. We felt that this man was still dreaming at his age. Over the years, I have taken my friends to visit the "mud school" every year, and everyone was deeply moved by his work. What Ren Weizhong wants to do most is to build an agricultural ecological demonstration village, popularize environment-friendly rural housing, and at the same time realize that the village economy does not depend on the city, and all kinds of resources circulate internally, and take the mode of sustainable development. The inspiration of the eco-village comes from Dazhai, taking the spirit of self-reliance, hard work and collectivism in Dazhai.

Although it seems difficult to achieve the goal of eco-village, times have changed and everything has developed in a favorable direction. First of all, Ren Weizhong built the rural ecological house and improved the core rammed earth construction technology. Ecological residence is regional, and rammed earth building materials are universal. From eco-house to rammed earth construction technology, Ren Weizhong put forward a solution to make eco-house universal, and entered the market through homestay buildings, which was connected with people’s real life. In this sense, Ren Weizhong is somewhat like a building materials developer.

Secondly, people’s ideas in rural society are constantly evolving. From the perspective of construction practice, modern building materials such as reinforced concrete have entered the countryside for more than 30 years. In the process of long-term living and use, the problems of these building materials are gradually exposed, and the countryside is also learning lessons, constantly reflecting and improving the construction of houses. The way of sticking tiles on the external walls of houses in the 1990s has been eliminated. However, the popularization of rammed earth buildings needs to solve some technical and cost obstacles. Farmers hope to build houses high, but rammed earth houses with more than two floors are facing the test. In addition, the labor cost of rammed earth building is high, how to reduce the cost? Whether it is feasible for farmers to build houses with mutual assistance under the trend of urbanization is unknown. From the perspective of living concept, the situation is changing. The transformation and upgrading of the homestay industry gives rural society the opportunity to intuitively feel the ecological living, get in touch with the architectural concept of low-carbon and environmental protection, and reshape the understanding of earth houses. This is a slow and gradual process. The field of self-built houses in rural areas is a fully competitive free market, and farmers will make rational choices, but how to guide farmers to build houses also tests the vision and wisdom of the government.

During the construction of "beautiful countryside", some local governments in rural areas of Zhejiang Province promoted the construction of model farmhouses, notably Wencun Village, Dongqiao Town, Fuyang District, Hangzhou City, Zhejiang Province, which was designed and built by Wang Shu, winner of Pritzker Architecture Prize. There is also Dazhuyuan Village in Anji, which was designed and constructed by Du Chunyu’s design team of Shanghai Jiaotong University Design and Research Institute. The project won the award of "2016 National Rural Housing Pilot Demonstration" by the Ministry of Housing and Urban-Rural Development.

Whether the design of modern rural model houses is good or not, rural society will naturally give feedback. Rural society should be more confident, based on its own experience, and put forward solutions to rural residential modernization. Just like Ren Weizhong, the scheme extracted from tradition may not be perfect at first, but it can be improved in many ways in the future. Farmhouses designed by western architects, urban architects or local people will eventually be tested by rural society. Ren Weizhong’s rammed earth architecture is still improving, and rural society needs more time to digest and understand his ideas and practical achievements.

The evolution of social concepts is inseparable from "potential", which requires observing the trend from the interaction between urban and rural areas. In 1984, farmers began to work in cities. For more than 20 years, farmers moved to cities to build cities. Around 2010, China ushered in a wave of rural construction. Many urban intellectuals, artists, urban white-collar workers, entrepreneurs and even foreigners went to various villages in China to help villages and villagers improve their living conditions and rebuild rural order through various ways, such as poverty alleviation teaching assistants, protection of ancient buildings, revival of folk arts, ecological agriculture, tourist hostels and reconstruction of rural cultural life. The rural construction in China shows the rich appearance of a hundred flowers blooming, and there is a case of "Yangjiale" naked heart township igniting the residential industry. Who knows whether there are future industrial opportunities in these various rural construction projects?

Urban people flow to the countryside, build the countryside, dig deep into various rural resources and develop creative projects, which bring opportunities for rural economic employment, and rural local rural builders like Ren Weizhong benefit from it. However, even if there is a qualitative change in the concept of living and construction in rural society, the realization of the ideal of building an ecological village still depends on the return of population from rural areas, so it depends on the general trend of the national economy and the trend of globalization. In such an era of crisis, the vast countryside can become a safe haven. The agricultural eco-village advocates ecological construction, is self-sufficient in economy, realizes resource circulation in the village, and farmers live independently of the city. This idea provides a solution to the crisis for the society. It is the hope of the countryside that bits and pieces of rural construction projects resonate together on the land of China. It is the mainstay of the times for farmers like Ren Weizhong to stick to the local position from beginning to end and seek the way out of rural modernization from tradition.

In a media interview, Ren Weizhong pointed to House No.2 in Mingtang in his heart and said easily, "The pebbles on the wall come from the stream in front of the door. In the future, when this house is demolished, the stones can be returned to the stream." The amateur architect has no obsession with architecture, and his philosophy is Taoist. Everything comes from nature and finally returns to nature. This is the belief and methodology of Ren Weizhong’s ecological and environmental protection cause. There is a cloud in the Book of Songs, "Peace and happiness". Anji has been a beautiful place since ancient times. This is the source of Ren Weizhong’s simple concept. Yes, what could be more divine than nature?

Reference catalogue

1. "Anji Ecological Watcher", Zhao Xiao, 2007, China Environment News.

　　 URL: http://www.eedu.org.cn/Article/epedu/epman/200702/11891.html

2. Ford Motor Environmental Award official website URL: http://cegc.npi.org.cn/about/award.html

3. "Farmers who can’t build houses are not good architects", Jin Yanqi, 2015, No.74 of Designer magazine.

　　 URL: https://wenku.baidu.com/view/cba72f4458f5f61fb73666d4.html

4. China Building Media Award official website

　　 URL: http://nd.oeeee.com/cama/200811/t20081127_921211.shtml

6. Ren Weizhong’s "Yu Gong" in building an ecological village, Huang Rong, 2012, Green China magazine.

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7. Anji Environmental Education Base

　　 URL: http://ajnews.zjol.com.cn/ajnews/ajepb/hj/effect/index.htm

8. "Huzhou Anji" Clay School "pushes energy-saving technology to the whole country", Yu Ying and Wang Weili, 2017, Huzhou Daily.

　　 URL： http://zj.people.com.cn/n2/2017/0918/c186947-30745160.html

The richness of the configuration is closely linked to the cost performance of a car, and many people have mentioned it. Now let’s follow Xiaobian to see what it has done.

Let’s take a look at the appearance of the Accord first. The front shape of the Accord has taken a fashionable and simple route, and it looks very individual with a multi-spoke middle net. Coupled with headlights, the shape is quite simple. The car is equipped with LED daytime running lights, automatic opening and closing, adaptive far and near light, delayed closing and so on. Coming to the side of the car, the body size of the car is 4980MM*1862MM*1449MM. The car adopts fashionable lines, and the side circumference gives people a very delicate feeling. With large-sized thick-walled tires, the shape is quite individual. In terms of the rear end, the overall shape of the Accord’s rear end echoes the front face, and the taillights present a tough design style, coupled with the hidden exhaust pipe, creating a good gas field.

Sitting in the car, the interior looks very simple and generous, which is very suitable for the tastes of young consumers. The steering wheel design of this car is very cold, and it is equipped with the functions of manual steering wheel up and down+front and rear adjustment, which gives people an impulse to control it. From the central control point of view, the design of the center console is reasonable, which makes the interior design quite layered and conforms to the mainstream aesthetics. The interior feels good, let’s take a look at the dashboard and seats. The car is equipped with a soft dashboard, and the sports atmosphere is in place. The car uses leather seats, which are wrapped in place and are very comfortable to ride.

Accord is matched with CVT gearbox, with a maximum power of 141KW and a maximum torque of 260N.m, and its power performance is good.

The space size of the Accord trunk is in line with its household positioning, and the storage space for family travel can be met, with excellent space flexibility. In addition, the car is equipped with fatigue warning, anti-lock braking (ABS), LED daytime running lights, brake assist (EBA/BAS, etc.), braking force distribution (EBD) main driving airbag, co-pilot airbag, knee airbag, side airbag curtain, front side airbag and other safety configurations.

After reading the above description, Xiaobian will make a summary. The car introduced today is not only eye-catching in space, but also has reached the mainstream level in various configurations, and there is nothing to be picky about driving experience and space experience.

Low fuel consumption is very attractive to many office workers. After all, what I think about on my way to and from work every day is definitely not power control, but saving money and ensuring basic travel needs. Today, Xiaobian picked a car and introduced it to everyone. It is. Let’s take a good look at it.

First of all, from the appearance, the front face of the Accord gives people a very simple feeling, plus a multi-frame air intake grille, which makes people unforgettable. At the same time, the headlights show angular design style, and the design looks very soft. The car is equipped with LED daytime running lights, automatic opening and closing, adaptive far and near light, delayed closing and so on. Come to the side of the car, the car body size is 4980MM*1862MM*1449MM, the car uses dignified lines, and the side circumference gives people a very simple feeling. With large-sized thick-walled tires, it gives people a very simple feeling. In terms of the rear end, the Accord’s rear line is cool, the taillights are very dynamic, and the exhaust pipe adopts a hidden design, and the overall layout is impressive.

Sitting in the car, the front face of the Accord looks very individual and the overall shape is remarkable. The steering wheel of the car is well designed, made of genuine leather, and the visual effect is good. Take a look at the central control. The car is equipped with a stylish and simple touch-sensitive LCD central control screen, which makes the interior style impressive and the details are still in place. Let’s take a look at the dashboard and seats again. The car is equipped with a stable dashboard, and the information can be read easily and clearly. The car uses leather seats, which are wide and thick, improving the ride experience of drivers and passengers.

Accord is matched with CVT gearbox, with a maximum power of 141KW and a maximum torque of 260N.m, and its power performance is good.

The car is equipped with car networking, driving mode selection, remote control key, Bluetooth key, interior atmosphere light, engine start and stop, etc., which fully ensures the convenience and comfort of car experience.

The car introduced today is remarkable in terms of space, configuration and power, and home travel is also a good helper. If you are excited, you may wish to go offline and actually feel it.

1905 movie network news After director Chen Sicheng and director Ning Hao, the "Chinese Comedy Dream Team" made another effort! On August 27, the national comedy exposed the trailer of the unit "The Road Back Home" co-directed by directors Deng Chao and Yu Baimei, starring Deng Chao, Yan Ni, Wang Ziwen, Wang Yuan, and Miao Fu all appeared, and Wu Jing, Sun Li, Yue Yunpeng, Jia Ling, Dai Lele, Liang Chao, and Yue Hong were surprised to help out.

The ultra-luxurious cast debuted with a northern Shaanxi accent and a down-to-earth "earthy" style, vividly showing the customs and customs of northern Shaanxi. What kind of story will happen on this "road back home" is full of curiosity.

The film "Me and My Hometown" is directed by directors Ning Hao, Xu Zheng, Chen Sicheng, Yan Fei & Peng Damao, Deng Chao & Yu Baimei, respectively. Zhang Yimou is the director of the film, Ning Hao is the director, and Zhang Yibai is the chief planner. It will meet with the national audience in this year’s National Day file.

Deng Chao fattened up and starred in the local big-money partner "Shopkeeper Tong" Yan Ni returned to her hometown

Wang Yuan went to the countryside and became a "soil baby" audience who couldn’t recognize it

The camera of "My Hometown and Me" in "The Road Back to My Hometown" is aimed at northern Shaanxi, China. Qiao Shulin, a "Sand Apple" dealer played by Deng Chao, has a comb of oil hair, a pair of sunglasses, and a handbag. He opens his mouth and comes to 20 million in business, just like a "local money". Why was such a successful person disliked by Yan Feiyan (played by Yan Ni), the senior sister of the same school and the queen of e-commerce? Why was he stamped as a "liar" by Jessica (played by Wang Ziwen), the assistant of the senior sister?

The two were forced to embark on the road back to their hometown together because they went back to their alma mater to participate in the school celebration, with constant twists and turns along the way and constant friction. In the preview, Qiao Shulin also showed another pair of "soil-eating" faces: together with his fellow villagers, he dug holes and picked sand to carry wood, and he was different from the "big money" image. What secret was hidden behind his identity?

In order to star in the Northwest Han Ziqiao Forest, Deng Chao revealed that he ate a lot of northern Shaanxi pasta and mutton to gain weight, "I hope there is more local oil and water in my body", and spent a lot of energy learning the northern Shaanxi dialect. On the spot, Yu Baimei, Yan Ni, and Miao Fu three Shaanxi people took turns teaching, and made rapid progress. Yan Ni, who has worked with Yu Baimei’s director 5 or 6 times, was called the perfect choice to play the eldest senior sister by him. "As a standard Shaanxi person, I fully understand the emotions of Shaanxi people, and can best deduce the state of a wanderer returning to his hometown."

In "The Road Home", Wang Ziwen plays Jessica, the assistant of the eldest senior sister. This character grew up in the city and returned to his hometown in northern Shaanxi with his boss. He also wears a pair of high heels to go downhill. Wang Ziwen admits that "every step is taken with gritted teeth, but the crooked posture adds a lot of comic effect to the character."

Wang Yuan is the actor who can be called the biggest breakthrough in the entire crew. He has changed from the bright appearance of an idol in the past to play Xiao Han, a rural teacher. His skin is dark and his shape is full of earthy smell. He reads He Jingzhi’s poem "Return to Yan’an" in a thick northern Shaanxi accent, "I hold on to the loess, and I stick it tightly to the nest of my heart", which instantly makes people forget his original appearance. Deng Chao said that after watching the movie, he thought Wang Yuan acted very well, "very simple and natural, and he also has Shaanxi genes. He is definitely the best candidate. Facts have proved that the cooperation is too happy." Miao Fu’s Wei Peng is full of joy, and director Yu Baimei once invited him to play, "There is a very deep local flavor in the play, and there must be excellent local actors to support it. I can’t think of anyone who can replace him."

The surprise revealed in the trailer did not stop there. Wu Jing, who had collaborated with Deng Chao and Yu Baimei in movies, played a northern Shaanxi boss in "The Road Back Home", wrapped in a white towel and speaking in northern Shaanxi dialect. Although Sun Li only had a glimpse in the trailer, the stewardess’s appearance was impressive.

Yue Yunpeng and Jia Ling confessed affectionately that "I love you now". Could it be that the two play a pair of CP this time? Dai Lele and Liang Chao have also cooperated with the director many times. Yue Hong’s mother Gao is the first teacher of the local school. She has been educating children for decades and is determined to get everyone to pass the exam. She is a key figure in the story. Deng Chao and his "local flavor township party" embarked on the road back to their hometown together, and the strong local feelings of northern Shaanxi are about to emerge.

Deng Chao and Yu Baimei use the movie to pay tribute to the hero of sand control

"Me and My Hometown" Awakens All Chinese People’s Homeland Connection

The newly released trailer also reveals the creative background of the film. The trailer begins by mentioning the Mu Us Desert, one of the four major deserts in China. The yellow sand for days and days cannot be seen at a glance, and the "sandstorm effect" can be felt through the screen. "The mountains are bald, and the beaches have no forests. The yellow sand is rolling, and there is no harvest for ten years" is a true portrayal of the local area. Many residents have to stay away from their hometowns to make a living. It is gratifying that this is only the former Mu Us Desert. Now this land is no longer barren, but green and prosperous, completely rewriting the history of "sand advances and people retreat". Even director Yu Baimei returned to his hometown and was shocked by such earth-shaking changes.

Such a change is inseparable from the hard work of countless sand control heroes, who share the dream of planting trees to control sand. Qiao Shulin, the protagonist of "The Road Home", is also a fruit merchant who grows apple trees. Deng Chao said emotionally: "Trees are a metaphor for tenacious vitality. Even if people have left, the trees are still growing, and the people who return to their hometowns are generation after generation. This nostalgia is the same as that of big trees, and it is endless."

Last year’s National Day file, through seven historical moments, ignited the memory of the whole people, and also won the National Day file championship with more than 3.10 billion box office results. Today, "My Hometown and I", as a sister piece of "The Motherland", spans all corners of the world. Through five hometown stories, it awakens the most sincere and simple homeland feelings in the hearts of all Chinese people, and presents it in the form of comedy, which makes people feel moved and powerful in laughter and tears.

In the previously exposed unit story, "A UFO Falling from the Sky" directed by Chen Sicheng depicted the beautiful mountains and rivers in the southwest region. After the trailer was released, it became the first short video platform to broadcast over 100 million movie trailers after the theater resumed work; "Beijing Good People" directed by Ning Hao showed the variety of life in North China, and the topic "Ge You plays Beijing again" ranked 11th on Weibo’s trending topic list and No. 1 on the same city list in Beijing; this time, "The Road to Homecoming" directed by Deng Chao and Yu Baimei interpreted the customs of the northwest region. The footprints of "My Hometown and Me" have crossed more than half of China. The "Chinese Comedy Dream Team" worked together to create a national comedy feast and set foot on the "road to homecoming" together.