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Some netizens left a message and wanted to see it. Today it came. Next, let’s take a look with Xiaobian.

First of all, from the appearance, the Roewe RX5 front is very dignified as a whole, and the middle net adopts a three-piece shape, which looks very simple and generous. Coupled with the headlights, the overall look is very tough. 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 4655MM*1890MM*1664MM, the car uses deep lines, the car body gives people a very personal feeling, with large-size thick-walled tires, giving people a very simple feeling. In the design of the rear end, the rear end looks very avant-garde, the taillight style is relatively simple, and with the unique exhaust pipe, the overall shape is still very attractive.

Sitting in the car, Roewe RX5 interior looks fashionable and exquisite. In addition, the car is supplemented by a three-spoke steering wheel, which is made of genuine leather and has a good grip. Take a look at the central control, and with the 27-inch touch-sensitive LCD central control screen, the interior design is quite layered, giving people a feeling full of youth and fashion. The interior feels good, let’s take a look at the dashboard and seats. The car is equipped with a delicate dashboard, which is very eye-catching. The car adopts leather seats, equipped with functions such as electric adjustment of auxiliary seat, electric adjustment of seat with memory, and seat proportion tilting, which further improves the comfort of drivers and passengers.

Roewe RX5 is matched with a wet dual clutch (DCT) gearbox, with a maximum power of 138KW and a maximum torque of 300N.m, with good power performance.

Looking at the configuration, Roewe RX5 is equipped with car networking, driving mode selection, remote control key, Bluetooth key, rear wiper, interior atmosphere light and other configurations.

This class of cars is usually the first choice for most people. First of all, the price is not expensive, and secondly, all the configurations are quite complete, which is still very worth starting with. Interested riders might as well go offline and actually experience it.

　　Xiaoxin was moved these two days!

　　In the video of infrastructure builders released by bilibili,

　　Looking at everyone’s full-screen confession,

　　Inner excitement and pride are beyond words!

　　State-owned Xiaoxin bilibili released "Report on the Motherland! The first-line builders of global infrastructure report to you, and nearly 4000 barrage screens are National Day students. Click "read the original" and watch the super burning with the barrage!

　　On the occasion of the 69th birthday of the motherland,

　　Cross the river and cross the sea,

　　Tie a long dragon, erect a rainbow, and unblock China.

　　Report to the motherland!

　　These infrastructure projects that have made breakthroughs at major nodes,

　　Please review!

Report to the motherland! Please review these railways.

　　1. Hajia Railway

　　On September 30th, the Harbin-Jiamusi Railway officially opened for operation, ending the history that most areas along the route were closed to trains. The Hajia Railway starts from Harbin in the west, passes through Binxian County, Fangzheng County and Yilan County, and ends in Jiamusi City. The total length of the line is 344 kilometers and the design speed is 200 kilometers per hour. The fastest bus travel time between Harbin and Jiamusi will be shortened from 5 hours and 44 minutes to 2 hours and 3 minutes.

Style along the line: Mayihe Bridge (China Railway 11th Bureau)

Report to the motherland! Please review these airports.

　　2. Tumushuk Airport in Xinjiang

　　Tumushuk Airport is a 4C-class regional airport in China, and Tumushuk City borders five Central Asian countries. It is an important city along the China-Kyrgyzstan-Ukraine Railway and the New Eurasian Continental Bridge. After the opening of the airport, the history of no navigation in the desert of southern Xinjiang in China came to an end, and the annual passenger throughput of 80,000 passengers and the annual cargo and mail throughput of 360 tons can be realized in a short time.　

　　3. Terminal T2 of Guilin Airport in Guangxi

　　The expansion project of T2 Terminal of Guilin Airport, with a construction area of about 100,000 square meters, will be an important national tourist airport after completion, which can meet the needs of annual take-off and landing of 101,200 sorties, annual passenger throughput of 12 million passengers and cargo and mail throughput of 95,000 tons.

　　The overlapping treatment of airport roof surfaces naturally forms a side skylight, which is similar in shape to the "Longji Terrace" scenic spot and the eaves of residential buildings in northern Guangxi. (China Construction Eighth Bureau)

Report to the motherland! Please review these bridges.

　　4. Zhejiang Yueqing Bay Bridge

　　On September 28th, China’s largest span variable cross-section segmental beam V pier rigid frame and the longest segmental beam prefabricated and assembled cross-sea bridge project — — Yueqing Bay Bridge in Zhejiang Province was officially opened to traffic.

　　When the bridge is completed and opened to traffic, it will realize the seamless connection between Ningbo Zhoushan Port, Taizhou Port and Wenzhou Port and the national high-speed network, and further build the coastal expressway in China. (China Communications First Bureau)

　　5. Sanmenxia Highway-Railway Bridge

　　Menghua Railway is the world’s longest dedicated railway line for heavy-haul coal transportation, starting from Haole Baoji Station in Inner Mongolia in the north and ending at Ji ‘an City in Jiangxi Province. The main line is 1,814.5 kilometers long and the planned transportation capacity is over 200 million tons/year. At 10: 10 a.m. on October 1st, the steel truss girder of Sanmenxia Yellow River Highway-Railway Bridge on Menghua Railway was pushed up, and the closure was successfully realized, setting three world records of the longest pushing length, the heaviest pushing weight and the largest design live load, and three domestic new technology records for the first time.

　　The total length of the bridge is 5663.75 meters. The lower layer of the main bridge is a four-lane railway (Menghua and Yunsan are two-lane railways), and the upper layer is a two-way six-lane expressway with a width of 32 meters. The main bridge is a continuous steel truss beam, which is constructed by incremental launching method. (China Railway Construction Bridge Bureau)

　　6. Hutong Yangtze River Bridge

　　On September 28th, on the occasion of the National Day Festival of the 69th anniversary of the founding of the People’s Republic of China, the main tower of the world’s tallest public railway bridge — — The main tower on the north side of Hutong Yangtze River Bridge was successfully capped. The overall construction of the main tower is as high as 330 meters, equivalent to a 110-story tall building, with 73,000 cubic meters of concrete pouring and 11,000 tons of steel bars, making it the largest in the world.

　　In order to meet the navigation demand of the main channel of the Yangtze River, the Hutong Yangtze River Bridge has a main span of 1,092 meters, which is the largest span cable-stayed bridge in China and has the trinity function of national railway, intercity railway and expressway. (China Railway Bridge Institute, China Railway Bridge Bureau)

Report to the motherland! Please review these subways.

　　7. Wuhan Metro Line 11

　　At 9: 00 a.m. on October 1st, the eastern section of Wuhan Metro Line 11 was put into trial operation, and the designed subway train with a speed of 100 km/h only takes 32 minutes from Guanggu Railway Station to Zuoling Station! The total length of the project is 19.697 kilometers, all of which are underground lines, mainly passing through Liufang District, Guanggu Central District and Zuoling Future City of Donghu High-tech Zone, with a total of 13 stations.

　　After 1434 days, the subway station with the decoration concept of "Caiyi Xingang, Tongda Subway" and "Brilliant and Zhihui Subway" came into view. (China Power Construction)

　　8. Fuzhou Metro Line 2

　　On the afternoon of September 10th, Fuzhou Metro Line 2 was opened to traffic. As the second line of Fuzhou rail transit network, it is the east-west backbone of Fuzhou urban rail transit, connecting the central city and Jinshan and Minhou areas divided by Minjiang River and Wulong River. The total length of Line 2 is 30.62km, all of which are laid underground, with a total of 22 stations.

　　Fuzhou Metro Line 2 has crossed the river for 2 times, the bridge piles for 7 times and the buildings for 9 times. In less than 4 years, it has achieved the goal of opening the whole line. It is expected that the whole line will be put into trial operation at the end of January next year. (CCCC General Contracting, CCCC Tunnel Bureau)

Report to the motherland! Please review these highways.

　　9. Taihang Mountain Expressway

　　Taihang Mountain Expressway starts from the junction of Zhuolu and Beijing-Hebei in the north, connects Shanxi in the west and Henan in the south, and runs through Taihang Mountain. The whole line covers 53 4A-level scenic spots, with a planned total length of 651 kilometers. It is planned to open to traffic at the end of 2018. After completion, it will become a traffic artery connecting Beijing, Hebei and Henan.

　　10. "Chunfeng" shield machine

　　On September 29th, the largest diameter slurry balance shield machine "Chunfeng" independently designed and manufactured by China was rolled off the production line in Zhengzhou. The equipment was jointly developed by China Railway Equipment, China Railway Tunnel Bureau and State Key Laboratory of Shield and Tunneling Technology, with a diameter of 15.8m, a total length of 135m and a total weight of 4,800t, and will be applied to the construction of Chunfeng Tunnel of Shenzhen Motor Vehicle Tunnel.

　　The engineering geological conditions of Chunfeng Tunnel in Shenzhen are very complicated. The shield tunneling section will cross 11 broken zones and will tunnel 3.6 kilometers of rock strata at a time, which is one of the most challenging large-diameter shield tunneling projects in shield tunneling.

　　Finally, Xiaoxin shared a group of netizens’ messages for everyone.

　　Pay tribute to these builders who stick to the front line!

On July 1 ST, Tesla announced today the car purchase rights of its Model 3/Y model in July.rear-guardStandard endurance/long endurance four-wheel drive models can enjoy a limited-time five-year zero-interest installment car purchase plan if they place orders before July 31.As a comparison, last month’s car purchase rights were Model 3/Y standard battery life version, and you can enjoy the 5-year 0-interest installment car purchase plan.

As of the press release of IT House,Tesla did not adjust the price of the Model 3/Y model.With reference to official website, the prices of two models are as follows.

Tesla started the delivery of Model 3 high-performance version (high-performance all-wheel drive version) on June 18th. The front face of the car is provided with air vents and a uniquely designed rectifying front lip, and the rear end is equipped with a carbon fiber spoiler and diffuser, as well as an exclusive racing badge, equipped with new 19-inch warp wheels and exclusive red high-performance calipers.

In terms of handling, the car provides three acceleration modes: comfort, standard and madness, as well as a number of custom track modes, and at the same time improves the brake feel, using aluminum alloy sports pedals.

In addition, the car adopts a new generation of high-performance powertrain, which is equipped with Tesla’s new generation of high-performance motors for the first time. Under the condition that the volume and weight are almost unchanged, the power of a single motor has increased by more than 20%.The maximum power is 460 HP, the peak torque reaches 678N?m, the acceleration time is 3.1s, and the CLTC cruising range is 623 km..

In the world of light and shadow, the shaping and deduction of roles often become the soul of a movie. The recently released film "A Revenge of Shame" has aroused widespread discussion with its unique narrative charm and deeply rooted role-building. Among them, the role played by Qiao Shan has subverted the audience’s cognition with its unprecedented tough guy image, which has aroused great concern from the film critics. It is particularly noteworthy that Tang Dayuan, a well-known film critic, made an in-depth analysis of this film. He believes that Qiao Shan in Revenge has created the toughest character in his career. This evaluation not only reveals the artistic value of the film, but also triggers us to re-examine Qiao Shan’s acting and role-building.

[Introduction: The Encounter between Tang Dayuan and A Revenge of Shame]

Tang Dayuan, a critic who enjoys a high reputation in the film industry, is deeply loved by fans for his sharp and unique vision and profound and delicate interpretation. His evaluation of "A Revenge of Shame" undoubtedly added more profound cultural background and artistic weight to the film. After watching the movie, Tang Dayuan said that with its gripping plot, full characterization and deep excavation of social reality, the film quickly aroused enthusiastic response from the audience and became a dark horse of Chinese movies in 2024. In particular, he pointed out that Qiao Shan’s performance in the film was particularly eye-catching, and he successfully created a tough guy image full of strength without losing emotional depth, which was a major breakthrough in his acting career.

[Qiao Shan: Psychological and Emotional Analysis of the Tough Guy Image]

In his in-depth analysis of Qiao Shan’s role, Tang Dayuan first focused on his psychological depiction. He believes that Qiao Shan’s protagonist is not a muscular man in the traditional sense, but shows the true core of a tough guy through his inner strength and tenacity. The role’s calmness in the face of adversity, perseverance in the face of difficulties, and the brilliance of human nature displayed at critical moments all make this role transcend the superficial rigidity and have a more three-dimensional and diverse personality level. Tang Dayuan pointed out that Qiao Shan’s precise handling and delicate presentation of the character’s inner feelings enabled the audience to glimpse the complex emotional world behind a tough guy, which was undoubtedly a difficult challenge to his acting skills and the key to his successful portrayal of a tough guy.

[Acting Comparison: Qiao Shan’s Transformation and Breakthrough]

On the basis of comparing Qiao Shan’s past works, Tang Dayuan emphasized that the role in Revenge is a bold subversion and a new attempt to Qiao Shan’s acting skills. In the past, Qiao Shan created a series of popular images in the field of comedy, and won the love of the audience with his humorous performance style. However, in this film, he completely got rid of the comedy label and interpreted a tough guy role in a deep and restrained way. This transformation not only shows Qiao Shan’s plasticity and broad way of playing as an actor, but also shows his determination and courage to dig deep into his role. Tang Dayuan believes that Qiao Shan’s performance in "A Revenge of Shame" shows a completely different sense of hierarchy and tension from the past, whether in grasping emotions, using body language or handling the relationship between characters, which fully proves his profound skill and outstanding talent in acting.

[Film Theme and Narrative Structure: Metaphor of Social Issues]

In addition to an in-depth interpretation of Qiao Shan’s role, Tang Dayuan also analyzed the core theme and narrative structure of Revenge. In his view, through the role played by Qiao Shan, the film skillfully explores deep-seated social issues such as dignity, revenge and redemption in modern society. The narrative structure of the film is compact and full of rhythm. Through the conflict and reconciliation between the characters, it shows the complexity of human nature and the cruelty and warmth of social reality. Tang Dayuan appreciated the director’s keen insight into social issues and successfully guided the audience to think deeply about these issues through the shaping of Qiao Shan’s role.

[Audience response: the resonance and hot discussion of Qiao Shan’s tough guy image]

After the film was released, the audience responded enthusiastically to Qiao Shan’s tough guy image in Revenge, and the discussion about the role on social media continued to rise. Many viewers said that Qiao Shan’s outstanding performance made them see a brand-new actor image full of strength and depth, and highly praised his acting skills. Some critics pointed out that Qiao Shan’s tough guy image in the film broke their inherent impression of being a comedian, which made people shine. In addition, the audience generally believe that Qiao Shan’s tough guy image is deeply rooted in people’s hearts, which not only enhances the artistic appeal of the film, but also opens up new possibilities for his acting career.

[Summary: Enlightenment of Tang Dayuan’s Views on the Audience]

To sum up, Tang Dayuan’s interpretation of the image of Qiao Shan’s tough guy in Revenge not only provides us with a new perspective to deeply understand the role, but also triggers our re-understanding of Qiao Shan’s acting skills. His point of view reminds us that a successful role-building requires not only a solid acting skill, but also a deep understanding and accurate grasp of the psychological, emotional and even social background of the role. Qiao Shan’s performance in "A Revenge of Shame" undoubtedly sets a good example for actors to break through themselves and broaden their career. This film not only allows us to witness the successful shaping of Qiao Shan’s image as a tough guy, but also makes us look forward to more possibilities and wonderful interpretations on his future acting career.

Editor in charge:

On September 20 th, the five-seat SUV was officially launched, and three configuration models were launched.The price range is 758-95800 yuan.. The car is built on the platform of Tianyu Architecture -M, and is positioned in the A0-class pure electric SUV. It offers three endurance versions and can run up to 510 kilometers.

The design of the new car is basically the same, with a closed front face, blackened integrated headlight group and two air inlets at the lower part. There are four kinds of car body colors: milk coffee white, glass red, storm gray and aurora green, and three of them are color contrast schemes.

The overall shape of the car is round, with a large inclination windshield, a streamlined roof, 15-inch aluminum alloy low wind resistance wheels and a rear spoiler.The wind resistance of the whole vehicle is reduced by 13%, and the driving energy consumption is also improved, so the cruising range is increased by about 20 kilometers.

The interior design also takes fashion and practicality as the theme, and provides two color schemes: warm sand white and empty environment green. It is equipped with LCD instrument and central control large screen, equipped with Ling OS Linxi intelligent system, and has intelligent voice interaction, online navigation and other functions. At the same time, the car also hasElectronic visor, 6-way adjustment of main driver’s seat, independent adjustment of rear headrest, automatic wiper, automatic headlight and remote control of mobile phone.And other functions.

In terms of safety configuration, the five-seat version of Bingo SUV adopts "five-ring high-strength steel body structure", and the high-strength steel accounts for 74.8% of the whole vehicle, and high-strength thermoformed steel with tensile strength exceeding 1500Mpa is used in 22 places. Besides,The whole system comes standard with 4 airbags, ESC electronic vehicle stability system, Autohold automatic parking system and reversing radar+image.Even novice drivers can be at ease when driving.

It is worth mentioning that although the size of Binguo SUV is not large, with a length, width and height of 4090*1720*1575mm, it has a long wheelbase of 2610mm and an extra long distance between two rows of seats of 882mm, and the lateral space utilization rate reaches 78.4%. There are as many as 23 storage spaces in the car.After the rear seat is put down, the trunk space can be expanded to 1450L L.It’s also easy to put some big objects.

In terms of power, the five-seat version of Wuling Bingo SUV, which is a family car, is relatively restrained. It is equipped with a three-in-one water-cooled flat wire motor with a maximum power of 75kW and a peak torque of 180 N m. that0-50km/h acceleration is 3.7 seconds.It can easily cope with the daily urban transportation scene.

The car is still equipped with Wuling’s self-developed battery, and the pure battery life of CLTC is divided into 330km, 401km and 510km.The power consumption per 100 kilometers is 10.1 kW h.. The whole system is equipped with three charging modes at will, which can match the domestic 220V/10A socket power supply, and also support DC fast charging. The SOC from 30% to 80% takes only 30-35 minutes.

There is no doubt that after the five-seat version of Wuling Bingo SUV goes on the market, it will bring a lot of sales pressure to popular models such as BYD, Ai ‘an Y with overlapping prices.

[car home Weihai Preferential Promotion Channel] Recently, we learned from Weihai market that preferential activities are under way, with the highest preferential range reaching 134,900 yuan and the lowest starting price dropping to 317,000 yuan. If you are interested in this electric car, you may wish to click "Check the car price" in the quotation form to strive for a higher preferential price.

The exterior design of the BMW i4 combines a sense of movement and futurity, and the front face adopts a closed kidney grille design, which highlights the identity of the electric car. Headlights have sharp lines and cooperate with the air intake below to create a strong visual impact. The side lines of the car body are smooth, and the roof lines are smooth. With large-sized wheels, the dynamic style is further highlighted. The tail design is simple and powerful, and the LED taillight group adopts unique design elements to make the overall shape more modern. The overall style of BMW i4 not only retains the design genes of BMW family, but also incorporates more innovative elements, making it stand out among many electric vehicles.

The length, width and height of BMW i4 are 4785mm, 1852mm and 1455mm respectively, and the wheelbase is 2856mm. The side lines of the car body are smooth, with a front track of 1601mm and a rear track of 1630mm, giving the car a dynamic posture. The front tyre size is 245/45 R18, and the rear tyre size is 255/45 R18. With sporty rims, the overall visual effect of the vehicle is further improved.

The interior design of BMW i4 is mainly luxury and technology. The center console adopts a 14.9-inch high-definition touch screen, which integrates voice recognition control systems such as multimedia system, navigation, telephone and air conditioning, providing rich information and entertainment functions for drivers. The steering wheel is made of leather, which supports manual adjustment up and down and back and forth, improving driving comfort. In terms of seats, BMW i4 provides leather imitation, genuine leather and leather /Alcantara mixed materials. The main and auxiliary seats have the functions of front and rear adjustment, backrest adjustment, height adjustment (4-way), leg rest adjustment and lumbar support (4-way), and the front seats also have heating function, which brings comfortable riding experience to passengers. In addition, the car is also equipped with mobile phone wireless charging function and multiple USB/Type-C charging interfaces, which is convenient for users to charge various devices on the road.

The BMW i4 is equipped with a powerful electric engine with a maximum power of 210kW and a maximum torque of 400 Nm, providing abundant power output and excellent acceleration performance.

The owner of car home said that the configuration parameters of Series I’s 3, 5 and X3 are almost the same, only the shell has been changed, and I want to buy the I4 for the sake of personality. Of course, it is still imported, so there is no need to do such a thing as buying it home and deducting the label. The big nostrils are not mediocre at first glance. When I drive out, everyone guesses at 600,000. I’m sorry.

A national wind animation, showing the brilliance of Datang. Recently, the release of "Three Wan Li in Chang ‘an" triggered a heated discussion among netizens. The film shows the charm of oriental aesthetics and takes the audience through the Millennium to feel the splendid Tang Dynasty. In addition to the tang style Tang rhyme overflowing from the poems, the patterns of the characters’ costumes in the movies are exquisite, which shows the beauty of lines in the long river of Chinese history.

Patterns, in short, are patterns. The ancients used natural scenery as the source of inspiration, and through realistic, freehand brushwork, deformation and other expressions, they formed the exquisite beauty of China’s traditional costumes, appliances and architecture.

China’s traditional patterns have been inherited in an orderly way since ancient times, and have been extended since the Neolithic period. Whether it is jade, lacquerware, clothing or architecture, they are all engraved with the beauty of traditional patterns. It can be said that patterns are the crystallization of ancestors’ wisdom and aesthetics, and they are also one of the passwords of culture and inheritance. Let’s follow the patterns in the film and appreciate this oriental romance that has been passed down for thousands of years.

As early as in the Wei, Jin, Southern and Northern Dynasties, there were beaded patterns on murals. By the Sui and Tang Dynasties, Lian Zhu pattern had become a representative pattern and became the theme pattern on various utensils.

As a new product of silk weaving, the ball-shaped pattern first appeared in the fabrics of the Tang Dynasty. The ball-shaped pattern not only has a distinct overall effect, but also has rich local details, which is very beautiful.

Treasure pattern is a traditional auspicious pattern in China, which has been endowed with auspicious and happy meanings. The patterns of treasure flowers in different periods are different. The patterns of treasure flowers in Sui and Tang Dynasties are more full, based on different natural flowers, with multi-layered petals, which have a graceful aesthetic feeling.

Ball road patterns usually appear in the form of skeleton, which can be filled with flower patterns, bird and beast patterns and geometric patterns, with rich layers and full pictures.

Grape grain can not only be used as the main pattern for decoration, but also as an auxiliary pattern combined with bird and beast patterns as the main body. Since the Han Dynasty, it was introduced to the Central Plains along the Silk Road, and was deeply loved by people, and developed into a traditional auspicious pattern in China.

Hunting patterns in the prosperous Tang Dynasty were very complicated, which not only reflected the social activities and aesthetic interests at that time, but also was the product of foreign cultures.

There was only one animal in the early Lianzhu Tuanjie, which was large and powerful. Since then, it has appeared in pairs, and its shape is more vivid and lovely.

The shapes of flowers and plants are round and round, which shows the natural beauty of plants swaying in the wind and also expresses the praise for tenacious life. The mosaic pattern in the Tang Dynasty was widely popular, with plump branches and leaves, smooth overall structure, complexity, splendor and vitality, which reflected the rich and beautiful style of arts and crafts in the Tang Dynasty.

After years of baptism, China patterns have formed a unique artistic style. It is a witness to the long-standing culture of the Chinese nation, and its engraved aesthetic memory still shines through the long river of history.

I. Implementation Background and Objectives

According to the requirements of the Action Plan for Promoting the Scale Deployment of the Sixth Edition of Internet Protocol (IPv6) issued by the Central Office and the State Council, the Notice of the General Office of the State Council on Printing and Distributing the Main Points of Government Affairs Disclosure in 2018 (Guo Ban Fa [2018] No.23), and the Notice of the General Office of the State Council on Printing and Distributing the Pilot Work Plan for Intensive Government Websites (Guo Ban Han [2018] No.71), Shanghai Big Data Center carried out the IPv6 upgrade and transformation of the whole station. At the same time, combined with the intensive platform construction of government websites, it organized and coordinated the websites of 16 district governments and 43 municipal government departments to realize IPv6 access and transformation simultaneously.

Second, the work situation

(a) to complete the "China Shanghai" portal IPv6 upgrade.

In 2018, based on the previous investigation, the Municipal Big Data Center made a work plan for upgrading and transforming the IPv6 portal of China Shanghai, and actively and steadily promoted related work in strict accordance with the work requirements.

The first is to clarify the subject of responsibility.The "China Shanghai" portal is hosted by the General Office of Shanghai Municipal People’s Government and undertaken by the Municipal Big Data Center. According to the job functions, the City Big Data Center is the main body responsible for the IPv6 deployment and transformation of "China Shanghai" portal website, responsible for implementing the work requirements and coordinating with other relevant departments to promote the IPv6 transformation of "China Shanghai".

The second is to clarify the status quo of the website.In July 2018, all the portals of "China Shanghai" were moved to the government cloud platform of the whole city, and the government cloud platform provided the network and equipment layer infrastructure in a unified way.

The third is to determine the work plan.After research and comparison, it is decided to use the firewall equipment exported from the network side, and use NAT64 protocol to realize the initiative connection of IPv4 network to access IPv6 network.

Figure 1: Business Access Process

NAT64 is a stateful network address and protocol conversion technology, which can realize the address and protocol conversion between IPv6 and IPv4 under TCP, UDP and ICMP protocols. This scheme can directly support IPv6 connection access without affecting the normal operation of the original business. The advantage is that the internal transformation of the data center is small, and it can be launched quickly, thus solving the problem of "skylight" on the page caused by external links.

Figure 2: Network deployment scenarios of 2：NAT64 and DNS64.

The Internet address of "China Shanghai" portal website is bound with the internal load-balancing address, so this time it will be realized by configuring NAT conversion from IPv6 address to IPv4 load-balancing address; This IPv6 address translation configuration is to add an IPv6 address entry on the original basis, without affecting the normal operation of the original IPv4 address.

At the end of 2018, we verified the connectivity, stability and IPv6 network effectiveness of the "China Shanghai" portal website one by one, and achieved the expected results.

(two) actively promote the city’s government website IPv6 upgrade.

The IPv6 transformation of Shanghai municipal government website needs the cooperation of many government departments and manufacturers, and it is difficult to coordinate and solve many tasks such as optical fiber circuit and political cloud network configuration, server networking and domain name resolution.

Since 2019, Shanghai has written the work requirements related to the IPv6 transformation of government websites into the "Annual Work Points of Government Affairs Openness" for two consecutive years. At the same time, according to the Notice of the General Office of Shanghai Municipal People’s Government on Printing and Distributing the Work Plan for the Construction of Intensive Platform of Shanghai Municipal Government Website (Hu Fu Ban [2019] No.9), we will deploy and promote the IPv6 transformation work together with the intensive work of government websites.

The website architecture of Shanghai municipal government is the interconnection of two platforms in urban areas, the websites of municipal departments are connected to the intensive platform of municipal government websites, and the network and equipment layer infrastructure is provided by the municipal government cloud platform. The 16 district-level platforms are the portal websites of all districts, which are transformed by the government cloud platforms of all districts.

The first is to complete the transformation of IPv6, an intensive platform for government websites.The transformation scope includes the portal website of the municipal government and the websites of 43 government departments. The municipal government cloud platform provides IPv6 addresses for the export of each website, and the municipal big data center applies for domain names for analysis.

Figure 3: IPv6 detection results

The second is to complete the IPv6 address transformation of cloud shield security protection service.The website authorities coordinate and promote Yundun technology providers to provide solutions, and apply for domain name resolution to Shanghai Big Data Center. At present, the websites of four departments using Yundun have all completed the IPv6 address transformation.

The third is to urge all commissions and bureaus to complete the IPv6 transformation of website dynamic link.Because most of the dynamic link backstage is developed and operated by the commissions, the IPv6 transformation of the website except the intensive part needs to be coordinated by the commissions. At present, most of the links have been transformed, and the IPv6 accessibility rate of the websites of various commissions and bureaus is basically above 90%.

The fourth is to complete the IPv6 address transformation of the portal website of the district government.The competent authorities of the portal websites of each district government formulated and implemented the upgrading scheme of the portal websites of this district government, and all 16 districts chose the cloud conversion service scheme to complete the IPv6 transformation.

Third, the effectiveness of the work

After intensive transformation, the use of IP in government websites has also changed from "multiple sites at one site" to "multiple sites at one site", and unified domain name resolution has been used to reduce the occupation of resources and greatly improve the efficiency of IPv6 upgrading.

At the end of 2020, the General Office of the State Council conducted a spot check on the IPv6 transformation of the national government websites. The websites of "China Shanghai" and 16 district governments all passed the retest, and the pass rate of the second and third level links exceeded 90%.

Fourth, work highlights

(1) Overall planning and unified deployment.The IPv6 transformation of government websites is a systematic project. From intensive integration to IPv6 transformation and deployment, it involves many contents, manufacturers and technical teams, and needs support from all sides. Shanghai Big Data Center actively cooperates with the general office of the municipal government to strengthen overall coordination and do a good job of communication and connection with technical support, construction trustees and network operators. After the transformation of IPv6, users of both IPv4 and IPv6 protocols can access it normally, so that government websites have many functions and services, and their normal use and access will not be affected.

(2) Intensive construction and simultaneous advancement.Shanghai Big Data Center reused the experience of "China Shanghai" IPv6 upgrade in the construction of intensive platform, and accelerated the deployment of IPv6 after relying on the intensive platform to solve most of the "external chain" problems. In 2019, relying on the intensive platform, it completed the IPv6 transformation of the city’s government websites in a unified way, and really achieved resource intensive.

(three) supervision and inspection to ensure the effectiveness.According to the Inspection Index of Government Websites and Government Affairs New Media and the Annual Assessment Index of Government Websites and Government Affairs New Media Supervision formulated by the General Office of the State Council, the Shanghai Big Data Center will bring the IPv6 upgrading of the government websites into the supervision from 2019. From July, 2020, report the IPv6 upgrade and transformation of the homepage of each website every month; At the same time, this work will be included in the annual evaluation of government websites to maintain the effectiveness of IPv6 upgrading.

With the progress of science and technology, the application cases of science and technology are increasing, and the scientization of education is one of them. In recent years, China has also ushered in a period of vigorous development of online education, which has made up for the disadvantages and shortcomings of traditional education. However, it is worth noting that online education and traditional education have their own advantages and disadvantages, so how to integrate the advantages of online and offline education and form a new educational ecology is the direction that all educational institutions need to work hard at present.

Online education is developing by spurt, which is the general trend.

With the development of educational informatization, public schools and educational enterprises are gradually involved in the field of network informatization education, and have ushered in a blowout development, which is unstoppable. I have to admit that online education has filled people’s growing learning needs in the current social life, and also brought convenience, broadness of knowledge resources, sharing of educational resources and scientificity of learning methods to the public. It is a great source for people to continuously improve their knowledge and cultural literacy, and online education should be respected!

The disadvantages of offline traditional education are exposed, but it is irreplaceable.

Take K12 primary and secondary education as an example, most of them are inseparable from the following modes: large class, one-to-one class and small class. Large class is the most frequently used teaching mode in China, but because of the large number of students, teaching students in accordance with their aptitude is limited and students’ learning effect is poor. 1-to-1 can implement personalized teaching, but the cost invested by parents and the profit gained by enterprises are not optimistic; Small class is a kind of class-opening mode to weigh the relationship between the two. Judging from K12 primary and secondary education, teaching students in accordance with their aptitude will indeed become a difficult problem.

In addition, due to the geographical limitations of traditional education and the uneven distribution of educational resources, some students can’t get a good education, so their disadvantages are exposed.

Although there are disadvantages in offline traditional education, there is one thing that online education cannot replace-the interaction between teachers and students. Although there is also interaction in online education, because of its virtuality, teachers can’t really perceive students’ learning status and psychological situation, and some subjects that need practical classes can’t get on-site guidance.

Learning with help: combining online and offline to realize the optimization of educational effect

"The treatment in the medical field pays attention to the combination of Chinese and Western medicine, treating the symptoms and curing the root cause! Online and offline education systems have their own advantages and disadvantages. Why not combine online and offline teaching? " Mr. Qi Zishuai, the founder of the brand "Learning to Help" in primary and secondary schools, put forward his own views on the current educational situation.

It is understood that at present, most educational institutions in China adopt online or offline single-mode teaching methods, while learning with help adopts the way of "online auxiliary offline teaching", which is eclectic. Through the intelligent teaching system and franchise operation mode, the sharing of educational resources in the industry, the scientific teaching methods and the optimization of educational effects have been realized.

In this process, "learning with help" helps affiliated educational institutions to reduce the teaching burden and improve the teaching effect, and at the same time helps students to obtain more and better educational resources and realize the dream of colleges and universities. Considering from this dimension, this is in line with the goal of educational equity and comprehensive education reform advocated by our country, and undoubtedly opens up a new era of teaching effect optimization.

I believe that under this online and offline education mode, China’s educational ecology will continue to improve.

　　[Pacific Auto Network Car Channel]In addition, the car oil that car owners are most concerned about is it. But for ordinary car owners, they are often confused when choosing engine oil — — What kind of engine oil is suitable for my car? Is there any better engine oil that can improve my engine power and reduce noise? How many kilometers is the oil change mileage? Can it be extended? We will answer all these questions in the series of articles on selecting engine oil for beginners.

● Two important parameters of engine oil

　　When choosing engine oil, we mainly care about two parameters — — SAE viscosity grade and API quality grade. These two parameters will be clearly marked on the oil tank body. Let’s take a closer look at the details of these two parameters.

● SAE viscosity grade

　

　　The viscosity of common engine oils on the market is classified by SAE (American Society of Automotive Engineers) standard. The tank body of engine oil will be printed with the corresponding engine oil viscosity value, such as "0W30". The "0" before the "W" in "0W30" indicates the oil.Low temperature viscosityThe grade is grade 0, and the "30" after "W" indicates the oil.High temperature viscosityThe level is level 30.

● Whether an engine oil is suitable in winter should not only look at the low temperature viscosity, but the "pour point" is the most important!

　　SAE specifies the apparent viscosity ranges of 0W, 5W, 10W, 15W and 20W engine oils at -35℃, -30℃, -15℃, -10℃ and -5℃ respectively. The smaller the number before "W", the better the low-temperature fluidity of this oil.At this point, some car owners will ask, is it necessary to use 5W or 0W engine oil when the temperature is below -30℃ in winter? Actually, it’s not like this.

　　The low-temperature viscosity grade only indicates the fluidity of engine oil at a specific temperature, which is not directly related to the environmental temperature of the vehicle. To determine whether the fluidity of engine oil is sufficient at a specific ambient temperature, we should pay attention to another important parameter of engine oil, that is, pour point (in degrees Celsius).Pour point is the lowest temperature at which engine oil can flow in a low temperature environment. We suggest that northern car owners choose engine oil whose pour point is about 10℃ lower than the lowest temperature in winter.

　

How to check the pour point parameters?
　　Pour point data of engine oil products can be found in official website, the engine oil manufacturer. Xiaobian queryMobil、, Shell, KunlunOfficial website, except Shell’s official website, other brands of official website have provided the corresponding pour point data of engine oil products.

Mobil 1:
http://www.mobil.ca/Canada-English-LCW/carengineoils_products_mobil-1_0w40.aspx#
Castrol Jinjiahu:
http://www.castrol.com/castrol/productdetail.do? categoryId=9040507&contentId=6030785
Kunlun Tianyuan SM:
http://www.kunlunlube.com.cn/rhy/pro/jiaoche/jiaoche_01_01.htm　

　

● The high temperature viscosity of engine oil should be determined according to the structural parameters of the engine.

　　The high temperature viscosity grade is calibrated according to the dynamic viscosity value of engine oil at 100℃. It expresses the viscosity of engine oil under the engine warm-up condition (generally about 100℃). The higher the high-temperature viscosity grade, the greater the viscosity of engine oil when the engine is warm-up.The selection of high temperature viscosity parameters of engine oil should be determined according to the engine structure design. The average car owner can’t know the engine structure of the vehicle better than that, soWe should choose high temperature viscosity parameters according to the maintenance data marked in the manufacturer’s manual..

● The dynamic viscosity at 100℃ determines whether the oil is fuel-efficient and low noise or high speed and high protection.

　　The actual measured values of dynamic viscosity at 100℃ of different brands of products with the same high temperature viscosity grade are different, and the lower dynamic viscosity at 100℃ can reduce and reduce engine noise; A higher dynamic viscosity at 100℃ will better protect the engine at ultra-high speed.Xiao Bian believes that according to the actual use of your car, if you use the car in urban areas and drive gently, it is recommended to use engine oil products with low dynamic viscosity at 100℃; If you like to occasionally compare with others to accelerate, it is recommended to use engine oil products with high dynamic viscosity at 100℃. How to check the dynamic viscosity of engine oil products? Like pour point data, it can be found in official website, the engine oil manufacturer.

● Editorial suggestions

　　For southern users, choosing a lower low temperature viscosity can improve the starting performance, at the same time, make the engine oil temperature rise faster and reach the appropriate engine oil working temperature and viscosity faster. For northern users, the low-temperature viscosity should be based on the local lowest temperature in winter to choose the engine oil with appropriate pour point parameters.

　　As for the high-temperature viscosity parameters, if you are a person who is afraid of trouble, you can buy oil directly according to the maintenance data in the manual. If you are an advanced user, you should pay attention to the dynamic viscosity data at 100℃ published by the manufacturer. By comparing the 100℃ dynamic viscosity data of engine oils with the same viscosity grade, we can find out the engine oils that can reduce fuel consumption and noise (relatively low dynamic viscosity) and protect the engine better at high speed and high load (relatively high dynamic viscosity).

● Case analysis

　

　　How should we choose according to different car use situations? The above is the parameter list of three oil products. If the lowest temperature in winter in our area is around -35℃, then we should choose Mobil No.1 5W30 with a pour point of -42℃. For car owners in southern China, they don’t have to pay too much attention to the pour point data of engine oil, so they should choose Castrol Jinjiahu or Mobil Suba 2000 with lower dynamic viscosity at 100℃ (both dynamic viscosities at 100℃ are 10.7). This can reduce the fuel consumption and noise of the engine.

　

　

　

● User comments are wonderful:

1/F Pacific iPhone Client User 06-07 19:19:04
It’s no use burning engine oil with total synthesis.

Editor’s comment:Audi cars are widely used in current models, EA113 and these three cast iron cylinder engines. The engine warm-up temperature is designed to be higher, so the gap between the ring and the cylinder liner is larger. Volkswagen requires the use of 5W40 engine oil, but also requires the high-temperature and high-shear viscosity of the engine oil to reach 3.5cP. The high-temperature and high-shear viscosity of a large part of commercial engine oil with viscosity of 5W40 only reaches the level of 2.7-2.9cP, so it is natural to burn engine oil. I found a Mobil No.1 0W40 engine oil in the market, and its high-temperature and high-shear viscosity reaches 3.6cP, which can meet the requirements of Volkswagen engine statistically. You can try it next time you change the oil.

2nd Floor Pacific iPhone Client User 06-07 22:40:26
I don’t quite understand it, but I understand that if there is often a behavior of pulling up the speed, I should choose a high viscosity. However, there is little difference between the three data introduced. It should not be as high as possible, right? Any other introductions?

Editor’s comment:Suppose your car officially requires 5W30 engine oil, then you can go to official website to check the dynamic viscosity data of various engine oils at 100℃. If you often suddenly step on the accelerator and increase the speed, then choose 5W30 engine oil with relatively high dynamic viscosity at 100℃ among the products of various manufacturers, which will protect the engine better; If you drive smoothly and use high speed, using 5W30 engine oil with relatively low dynamic viscosity at 100℃ can reduce noise and fuel consumption.

Castrol doesn’t have 5w-30 grade engine oil, is it a trust?

Editor’s comment:Castrol has 5W30 viscosity engine oil products in several series. Here is a link to the data parameters of Castrol Jinjiahu:http://www.castrol.com/liveassets/bp_internet/castrol/castrol_usa/STAGING/local_assets/downloads/p,q/pds_castrol_gtx_2010.pdf

17th Floor, Shenzhen City, Guangdong Province 06-08 10:45:01
If you often go to the track, the minimum shift gear is 4500, which is basically 5500-6500 rpm. Is 0W40 or 10W60 better? The original factory requires 5W30.

Editor’s comment:As far as I know, the train type uses 10W60 engine oil. In fact, whether to choose 0W40 or 10W60 depends on whether you often use the car on the track or in the city. As for the racing car, the car has been warmed up before the race, and it will often accelerate rapidly and maintain a high speed during the race, so the use of 10W60 is to ensure that the friction pairs can be properly lubricated when they are in extremely high temperature. However, using 0W40 is really not suitable for racing cars, mainly because it can’t provide suitable viscosity to lubricate the engine under intense driving conditions.

The high-temperature and high-shear viscosity of ordinary engine oil at 200℃ is as low as 2.0cP. Obviously, this viscosity is not an ideal viscosity that can provide sufficient protection for the engine. It is suggested to find an engine oil product whose high shear viscosity at 200℃ can be higher than 2.6cP. Generally speaking, it is easier to find products that meet the requirements in 10W60 engine oil, and few products in 0W40 engine oil can reach this value.

Racing car running downtown, using 10W60, which is quite expensive and noisy.

　

● API quality grade

　　Generally speaking, our quality grades will be identified by API standards, that is, "SJ", "SL", "SM" or "SN" we see on the engine oil tank. The more the letters after "S" are sorted, the better the durability and quality of the oil. For example, "SM" will be superior to "SL". API stands for american petroleum institute’s evaluation standard of engine oil quality grade.

● There is a difference between "All synthetic engine oil" and "Mineral Oil".

　　Generally, we often refer to the whole of synthetic engine oil, and its grade is generally "SM" or "Sn"; The grade of semi-synthetic engine oil is generally "SL" or "SM"; The grade of mineral oil is generally SJ.

　　Generally, the classification of engine oil grades needs to pass professional laboratory tests, which contain a lot of durability tests, such as soot test. The engine oil that meets the requirements of "SN" must meet the requirements of "SJ", "SL" and "SM", and so on.

Low viscosity grade of "all synthetic engine oil" and "mineral oil" new oil performance index is similar.

　　So as car owners, what should we pay attention to when choosing the oil grade?First of all, we must understand that the new oil performance index of synthetic engine oil with the same viscosity grade is similar to that of ordinary mineral oil, and the difference between them lies in stability, durability and cleanliness.Therefore, when choosing engine oil, we should pay more attention to our car habits and the expected oil change cycle.

● Case analysis

　

　　A mineral oil and a synthetic engine oil-wide parameter are listed above. It can be seen that their API grades are quite different, which shows that the durability of the two oils is quite different, that is, the oil change cycle of the two oils is very different.In addition, their total base number is nearly doubled.The total base number of engine oil indicates the cleaning ability of engine oil, which is why synthetic engine oil boasts that it can avoid sludge formation and has a cleaning effect on the engine.

● Editorial suggestions

　　Generally speaking, the engine oil can be changed every 10,000 kilometers with engines from all over synthetic engine oil, but the engine oil with mineral oil needs to be changed less than 5,000 kilometers. On the market, the price of 4L in synthetic engine oil is about 450 yuan, the price of semi-synthetic engine oil is about 260 yuan, and the price of mineral oil is about 150 yuan. Considering that the oil change cycle in synthetic engine oil is doubled and it has a good cleaning effect on the engine, its cost performance is not as low as expected. For operating vehicles, it is more cost-effective to travel a long distance in a short time, with short oil change cycle, low durability and fast performance attenuation.

　　If we choose one of the two oils mentioned above, for ordinary family cars, we should choose Mobil 1, mainly considering that its "SN" quality can bring longer oil change mileage and better engine cleaning ability; For operating vehicles, Kunlun 8000 should be selected, so as to obtain the highest cost performance, reduce costs and increase profits in a short oil change cycle.

Summary:

　

　　Two important performance parameters of engine oil are SAE viscosity grade and API quality grade respectively.

　　The low-temperature viscosity parameter of engine oil represents the fluidity of engine oil at a specific temperature, which is not directly related to the environmental temperature of the vehicle. To determine whether the fluidity of engine oil is sufficient at a specific ambient temperature, we should pay attention to the pour point parameters of engine oil.

　　The high temperature viscosity parameters of engine oil should be selected according to the structure and design of engine. It is most convenient and reliable to select the high temperature viscosity of engine oil by referring to the engine oil viscosity parameters in the vehicle manual. Advanced users can check the dynamic viscosity data of engine oil products at 100℃ in official website, an engine oil manufacturer, and choose engine oil products with lower noise (relatively low dynamic viscosity) or better protection performance from high to high load (relatively high dynamic viscosity).

　　In synthetic engine oil, the grade is generally "SM" or "Sn"; The grade of semi-synthetic engine oil is generally "SL" or "SM"; The grade of mineral oil is generally SJ. There is little difference in performance indexes between all synthetic engine oil and ordinary mineral oil with the same viscosity grade, but the difference between them lies in stability, durability and cleanliness to the engine.

　　The editor’s suggestion is that ordinary household users should use the whole synthetic engine oil and set the oil change interval at 9000-10000 km. The operating vehicles can use mineral oil, and the oil change cycle should not exceed two months due to the long mileage per unit time.