Dinghuili Primary School takes The Lonely Brave as a project-based learning course for teaching and research.

　　Children’s understanding of the "lone brave" (CCTV screenshot)

　　Paintings by students of Dinghuili Primary School

　　With the attention of the People’s Daily and other media, "The Lonely Brave" is really a hit.

　　The reason why it became popular again was that people suddenly discovered that this online game theme song, which was originally sung by Hong Kong singer Eason Chan, caused a "viral spread" among primary school students who were mainly born after 10, and changed from BGM of various short videos to "joint code" for contemporary primary school students.

　　However, to what extent is The Lonely Brave popular among young people? What kind of transmission path did you follow? What kind of mood of the times is conveyed behind the explosion? Is all this accidental or inevitable?

　　phenomenon

　　"Can all your children sing" The Lone Brave "?"

　　Parents:

　　The lone brave "from person to person"

　　"Your children can sing" the lone brave "? My son can’t sing, will he be isolated? " In a WeChat group that gathered parents of the post-80s generation, some parents asked slightly anxiously. Among the parents and friends who answered him, eight out of ten said, "I can sing." A parent comforted and said, "Don’t worry, your child won’t do it now, but he will in a few days." Indeed, there has been a "human-to-human" phenomenon in the song "The Lone Brave".

　　Liuli overheard her humming the tune of this song on her way home and asked her, "Where did you know this song?" The daughter said, "All the students can sing."

　　A few days later, Liuli listened to her daughter sing the tune of "The Lonely Brave" at home, but the lyrics were slightly different. His daughter told him that it was a "dream version" of The Lone Brave.

　　The original "Lone Brave Man" has been revised several times, and many funny versions have appeared, which are sung among children. The so-called "dream version" is actually a version of the lyrics that dreams of not going to school, not doing homework, eating snacks and playing games.

　　Liuli found that, judging from the reaction of friends in the group, most children in primary school or even kindergarten can sing The Lonely Brave, and even if they can’t sing, they will hum the melody of the climax.

　　At first, some parents thought that their children learned from music lessons, but in the discussion, they found that the songs sung between children did not come from the classroom, but from the Internet.

　　"My children didn’t know it at first, but later they learned it from the children of the big brothers. His children were loosely managed and always went to Tik Tok." A parent gave evidence of his observation. Another parent said that both children in his family can sing "The Lone Brave". The boss learned it from the second child, and the second child played a role-playing game called "Mini World", which contained this song.

　　Parents with a second child found that "The Lonely Brave" was mainly sung in the middle and lower age stages of middle and large classes or primary school students in kindergartens. "My boss is already in the first grade, and it bothers her third-grade brother to hum this song every day."

　　Teacher:

　　Interact with students with The Lone Brave

　　Children’s love for "The Lone Brave" began during the epidemic prevention and control this spring. An ancient teacher in the first grade of a primary school told the reporter of Beiqing Daily that she would play some songs to the students during recess. When asked what songs they wanted to listen to, most of the children would say in unison: "The lone brave."

　　Teacher Gu has heard this song on the Internet before, but I didn’t expect the first-year students to be interested in this kind of pop music. When she plays this song during the break, some children will jump to the rhythm unconsciously, and almost all the boys in the class will sing at the climax.

　　Later, Teacher Gu saw on the Internet that a child used the lyrics of "The Lonely Brave" to check the secret code. She also learned to check with the students several times. "The students will be very happy to cooperate and feel that the teacher is very close to them."

　　Students also have different opinions about why they like the song "The Lonely Brave". Some students say that the lonely brave is an assassin, very elegant and handsome; Some students say that this is a song depicting laborers; Some students said that this is a doctor’s song to kill the virus.

　　The ancient teacher said that from the communication with the students, she felt that the children liked the song "The Lonely Brave", which should have originated from an online video during the epidemic. In the video, a swordsman killed the virus with a sword, and BGM was the song "The Lonely Brave". Therefore, the children think that this swordsman is very brave and has a chivalrous spirit, which can defeat the virus and make everyone’s life return to normal.

　　Liu Ying, a music teacher at Dinghuili Primary School in Haidian District, told Beiqing Daily that she heard the children singing this song in her own music class, and some children mentioned "The Lonely Brave" when sharing their favorite songs.

　　As a music educator, Liu Ying analyzed that the melody of "The Lonely Brave" is very suitable for children to learn to sing, with a fast rhythm and a strong sense of rhythm, which makes children easy to accept, and the rhythm and lyrics are sonorous, giving people an inspiring feeling, which is also in line with children’s psychological expectations when pursuing future hopes.

　　Liu Ying said that what impressed her most was the sentence in the lyrics, "Who said that a hero is standing in the light". Because every child has a heroic dream, this song touched the children’s dreams, and let the children know that heroes are not only firefighters, policemen and doctors, but also teachers and parents around them.

　　Because of the popularity of this song, the music teachers in Dinghuili Primary School also took the song "The Lone Brave" as a project-based learning course for teaching and research. According to the different age groups of students, the teachers asked the students to interpret "The Lone Brave" with different instrumental music and dance methods, which also achieved good art teaching results.

　　spread

　　Topics related to "The Lonely Brave" have rushed to the hot search list several times.

　　Wave 1:

　　After the launch, many stars covered it.

　　In addition to "going out of the circle" among younger people, the popularity of the song "Lonely Brave" on major social platforms has also continued to rise recently, and topics related to "Lonely Brave" have rushed to the hot search list several times.

　　The reporter of Beiqing Daily found that the spread path of the song "The Lonely Brave" can be roughly divided into the following four stages: attracting many entertainment stars to cover, entering the student group, serving as the "joint code" for adults and children, and being named by the mainstream media.

　　On November 8th, 2021, the Chinese theme song "Lonely Brave Man" of the game League of Legends derivative animation League of Legends: Battle of Two Cities was officially launched. The song was written by Tang Tian, composed by Qian Lei and sung by Eason Chan.

　　The reporter of Beiqing Daily found that Phoenix Legend, Angela Zhang, Xin, Tengger singer, A Duo and many other stars had covered "The Lone Brave Man" on the show or in the recording studio only about half a year after the song was launched.

　　In a variety show on Zhejiang Satellite TV, Yang Kun, Rainie Yang and J.zen sang "The Lone Brave", and Weibo’s topic "Yang Kun’s lone brave opens his mouth" was read by 7.888 million people.

　　In the program "Braving the Wind and Waves", Na Ying, Xu Ruyun, Sitar tan and Jessica sang "The Lonely Brave", and Weibo’s reading on three related topics reached 140 million.

　　Wave 2:

　　Infiltrate into the student group

　　While the entertainment circle is "broken", The Lonely Brave is also widely circulated among students. There is a chorus of the whole class, a performance, and a table dance of this song specially arranged by the teacher for the students. The reporter of Beiqing Daily found that as early as mid-March this year, there was a discussion on "Why do primary school students like" The Lone Brave "on the Internet.

　　Until now, you can still see a lot of hot content when you open the major platforms to search for the keyword "The Lone Brave" for primary school students, which is also the most intuitive embodiment of the song "The Lone Brave" successfully entering the student group.

　　The third wave:

　　Become a child’s "joint code"

　　After "The Lonely Brave" became popular among students, the reporter of Beiqing Daily also noticed that many self-media bloggers went to the streets to look for children’s "secret code". Many times, the phrase "I love you to walk alone in the dark alley" just started, and the children began to sing "I love the way you don’t kneel".

　　Interestingly, on April 2, a young man in Kaili, Guizhou Province played drums to exercise his courage at the school gate, but he did not expect to attract a group of primary school students to watch. Later, everyone sang "The Lone Brave" along with the rhythm. The video has 474,000 likes.

　　Wave 4:

　　Be "named" by the mainstream media

　　In addition to the strong communication power of all parties, the attention of major media has also become an important reason why the song "The Lonely Brave" has become popular all over the network. In the past two months, The Lonely Brave has been named by the mainstream media.

　　On May 26th, the People’s Daily official micro published an article entitled "The Solitary Brave Writer Responds to the Struggler who Warmly Moves Forward with Songs as Children’s Songs", and the topic was read 260 million times. On May 8, People’s Daily and many other media released "Nine Ancient Musical Instruments Unlocking the Ancient Style Lonely Brave", with a topic reading of 5.094 million in Weibo; On July 4th, People’s Daily WeChat WeChat official account published a tweet "Why do primary school students love to sing ‘ The lone brave ’ ? ",reading 100,000+.

　　sound

　　Good production, copyright, platform and capital win together.

　　"A song is on fire, and everyone is rushing to make their own version, which is now the norm in the industry." A music industry practitioner told the reporter of Beiqing Daily about the industry logic he observed. "Everyone is rushing to make a flow of money." A short video industry practitioner added.

　　"The lone brave is really a high-quality song. The lyrics and songs are excellent, and the chord direction is not vulgar. " A post-90 s platform musician told the reporter of Beiqing Daily, "It is normal for children to like such positive energy songs. In addition, the Chinese theme song, which was originally the game animation of League of Legends, also covers a large number of gamers. They are all young people and have a great overlap with the student group."

　　Analyzing the reasons for the popularity of this song, all four interviewees said that as the theme song of League of Legends game animation, the popularity of Lonely Brave has a lot to do with the ability of various copyright owners, music platforms and video platforms to spend a lot of money: "Now a song is not popular, 80% depends on money, and 20% depends on luck." The music critic told the reporter of Beiqing Daily, "The copyright competition of the three major Internet companies with music business has become fierce. Many times, everyone will push their own copyrighted songs and give little traffic to competing platforms. This is already a common practice in platform competition. Because every time it is played, there will be a corresponding income. "

　　A short video industry practitioner said, "When a song is hot, online celebrity covers and shoots short videos to get hot, and MCN will throw money at the back to push the content into a larger traffic pool for the sake of traffic. This created the popularity and visibility of the whole network. In the end, this song was heard by primary school students, and they began to sing spontaneously, which was a greater victory for traffic. "

　　Some media also said that the cultural logic of explosive fire is that experienced professionals enter the online pop music arena. "Of course, The Lone Brave can do this because the traditional record industry is behind it. Qian Lei, who has rich production experience and many masterpieces, is the producer, and Tang Tian, a female lyricist with many masterpieces, writes lyrics. Her personal experience of fighting cancer is also well known in the spread of The Lone Brave. In other words, the fire of "The Lone Brave" spread all over the network, and it also means that professionals will leave. " Titanium media reported that.

　　Chaoliu archives

　　The Lonely Brave carries inspirational genes from its birth.

　　The popularity of "The Lonely Brave" made the original singer Eason Chan somewhat unexpected. He personally sent Weibo and said, "I heard that I sang a children’s song."

　　According to Qin Yanqiong of Nanjing Normal University’s paper "A comprehensive discussion on nursery rhymes — — From Literature to Pedagogy, the word "children’s songs" originated from Zhou Zuoren: "children’s singers, children’s songs, Gu Yan nursery rhymes". Therefore, it is considered that nursery rhymes are the modern names of nursery rhymes.

　　Children’s songs and nursery rhymes are part of folk songs, oral poems created by the general public, and the true reflection of their real life, thoughts, feelings and psychological wishes in rhythmic and musical oral language. The popularity of ballads is actually a form of folk literature expression from ancient times to the present, which is closely related to the historical situation of social development.

　　Chu Zhaohui, an education expert and researcher at the China Academy of Educational Sciences, told the Beijing Youth Daily that children have a stage of growth and development. At the age of 4, it is a critical period for their personality growth and development, and they have obvious perception of the outside world. The popularity of this song is closely related to the external growth environment of minors now.

　　Nowadays, parents and teachers of children mostly urge their children to get better grades, and their emotional needs have not been met. So they need a certain channel to vent, and this song meets this need.

　　"If the emotion is not (satisfied), the child’s life experience will cross the actual age." Chu Zhaohui believes that families and schools should further reduce the pressure on children and let them "return to childhood".

　　Chu Zhaohui said, "Each of our children is like a ball. When you throw it on what kind of wall, it will bounce back. This is a very normal phenomenon and should not be over-interpreted. The song "The Lonely Brave" is a reflection of the emotional state of children. "

　　As a music teacher, Liu Ying also has a social view on the popularity of The Lone Brave. She thinks that good music songs must conform to the social development trend before they can become hot spots.

　　Under the background of the great changes in the past century and the national fight against the epidemic, the forceful rhythm and lyrics full of positive energy conveyed by Lonely Brave bring more encouragement to children growing up in this environment.

　　In addition, Liu Ying believes that there is a touching story behind the song "The Lonely Brave". Tang Tian, the lyricist of the song, is a woman who has been fighting cancer for ten years. She is not only the creator of lyrics, but also the hero of the song story. It can be said that the song "The Lone Brave" has an inspirational gene since its birth.

　　At present, it is impossible to fully count how many versions of this song there are. As many children feel, the lyrics of The Lonely Brave contain courage, blood, comfort and healing. These feelings make this song resonate with more people and give the lonely and brave people room for multiple interpretations.

　　Version evolution

　　Original version: Chinese theme song of the game League of Legends derivative animation League of Legends: Battle of Two Cities.

　　Cover: In 2022, it was successfully "out of the circle" and was covered by many big musicians and famous musicians.

　　Children’s songs: A kindergarten in Xuchang, Henan Province set the Lonely Brave as a wake-up bell; A doctor in Zhuhai, Guangdong, used the "Solitary Brave" to "check the code" to eliminate the fear of the little boy who treated his teeth; In a primary school in Kunming, Yunnan, after a class lost the tug-of-war competition for three years in a row, the teacher sang "The Lone Brave" to motivate the students.

　　Adaptation: Holiday Edition, Homework Edition, Altman Edition and Happy Edition, which are popular among children; It has been changed into an "industry edition" by police, doctors, miners, firefighters, prosecutors and township civil servants.

　　Text/Reporter Zhang Ziyuan Wang Wei Zhang Zhiyi Zhu Jianyong Coordinator/Zhang Bin

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Our reporter Dong Chang

Isn’t it incredible that gutter oil can not only be refined into biodiesel, but also become aviation kerosene to "fly" to the sky?

On September 18th, in Shenze Economic Development Zone, Hebei Province, the reporter walked into the product testing room of Hebei Huide Renewable Resources Co., Ltd., and Wang Meng, the technical director of the company, was sampling new products in front of the chlorine meter. Looking at the clear and translucent liquid in the glass dish, Wang Meng told the reporter, "This is the bio-aviation kerosene extracted from waste oil, which is colorless and tasteless."

This enterprise is well-known in the field of bioenergy. "We are the largest biodiesel producer in the province. Biodiesel is all refined from waste oil, with an annual output of 120,000 tons, and all products are exported to EU countries." Guo Jihui, the chairman of the company, said that at present, their production process of refining bio-aviation kerosene has completed the pilot test and has the conditions for large-scale production.

As early as the beginning of the factory in 2012, Huide Company aimed at the systematic research and technology development of waste oil resource utilization.

Shenze oil industry came into being with the development of daily chemical industry. As one of Hebei waste oil distribution centers, Shenze can collect more than 1 million tons of raw materials such as waste cooking oil and kitchen waste oil all over the country every year.

Relying on the foundation of local oil industry, Huide Company started with the extraction of epoxy fatty acid methyl ester from waste oil, and went through the process of technological innovation and equipment renewal, from providing bioplasticizers for manufacturers of disposable nontoxic PVC gloves and children’s toys to developing and producing bio-energy products such as biodiesel.

This is a green transformation. Along the way, Guo Jihui was deeply touched by the hardships of breaking through. "Every update link is like breaking through the customs, and every customs is a narrow escape."

"For the production of biodiesel, the waste oil should be heated to the evaporation point first, then condensed and recycled, and then the different components in the oil can be separated." Guo Jihui introduced that at the beginning, they invested more than 4 million yuan to build a new traditional tower distillation production line. After half a year of trial production, it was found that the separation efficiency was poor and the purity of refined fatty acid methyl ester could not meet the requirements.

In Guo Jihui’s view, the production of good products depends on innovation, and innovation cannot be afraid of investment. So, they scraped together nearly 6 million yuan, reluctantly dismantled the tower distillation production line and bought short-range molecular distillation equipment specially used for separation and purification of high-boiling mixtures. By updating the equipment, improving the process, and after repeated tests, Huide’s biodiesel production line finally reached its production capacity successfully.

The breakthrough from "0" to "1" is only the first step for this enterprise to rush to a new track.

Follow Wang Meng into the production workshop and see that the newly collected waste oil is being injected into a large tank, which is about to be pre-treated.

"In the pretreatment stage, we adopted a self-developed enzymatic process. The waste oil can be purified by biological enzyme catalysis, and high-purity fatty acid methyl ester and glycerol can be separated." Wang Meng introduced that with this process, the yield of biodiesel and glycerol can reach 90%, and energy consumption can be reduced by more than 3%.

With the breakthrough of key core technologies, Huide Company has successfully developed a new track for bioenergy industry. In 2022, the company’s annual biodiesel production capacity exceeded 120,000 tons, with an annual output value of 970 million yuan. "At present, the project with an annual output of 400,000 tons of bio-aviation kerosene is about to start construction." Guo jihui introduced.

What makes them even more happy is that the bioenergy industry chain here is accelerating.

In the past two years, Shenze County has seized the opportunity to build a strong new energy province, vigorously cultivated the development of bioenergy industry by gathering high-tech enterprises, improving infrastructure and expanding application scenarios, and has initially formed a whole industrial chain covering the collection and storage of waste oils and fats and the production of industrial-grade mixed oil, biodiesel, bio-aviation kerosene and other products. Up to now, there are 17 bioenergy enterprises in the county, and seven bioenergy projects with a total investment of 3 billion yuan are being accelerated. In the future, the annual production capacity of biodiesel and bio-aviation kerosene in the county will reach 400,000 tons and 700,000 tons respectively.

"Not long ago, Shijiazhuang was selected as a national pilot for the promotion and application of biodiesel, and the application scenarios became more and more abundant. Many foreign companies have come to us to discuss business." Guo Jihui is full of expectations for the future. "With the accelerated gathering of bioenergy enterprises, the industrial chain, supply chain and upstream and downstream regional cooperation in innovation chain will become closer and closer, and the competitive advantage of our products will become more obvious."

　　

　　The General Administration of Quality Supervision, Inspection and Quarantine (AQSIQ) announced on May 3 the results of quality spot checks on 120 kinds of sanitary towel products produced by 108 enterprises in 10 regions including Beijing, Tianjin and Shanghai, showing that the qualified rate of sanitary towel sampling was 97.9%.

　　The General Administration of Quality Supervision, Inspection and Quarantine exposed three kinds of unqualified products, including "Xinni" brand standard wing day and night combined sanitary napkins produced by Jinjiang Yiyuan Sanitary Products Co., Ltd., "Good Guard" brand cotton sanitary pads produced by Quanzhou Meiya Sanitary Products Co., Ltd., and "Baiyujie" brand dry mesh sanitary napkins produced by Yangzhou Kangda Sanitary Products Factory. (Reporter Bin Yang)

Editor: Jufu

According to official website, the Ministry of Education, the number of applicants for the national college entrance examination in 2023 was 12.91 million, an increase of 980,000 over last year and a record high. At 9: 00 on June 7, the students stepped into the examination room and officially started the college entrance examination journey. This exam is very important for candidates, and it has attracted the attention of every family and all walks of life, and all walks of life have tried their best to provide better service guarantee for candidates.

Today, the one-to-one express delivery platform of the instant delivery industry announced that the love test-taking activity was officially launched in 2023, which is also the sixth year of the love test-taking activity.June 7thtill/extremelysixmoon10sunDuring the college entrance examination, all orders related to the college entrance examination are allFree delivery, covering 2% of the flash service.60A city. Flash generalas alwaysInvest all the strength of the courier to help the candidates take the exam smoothly..

Flash means that during the college entrance examination, if candidates forget to bring admission tickets, ID cards and other reference documents, stationery, etc., they can place orders through flash apps, flash applets and other channels to enjoy the benefits of flash love test-taking activities. After completing the service by flash, the user will reply "Free of College Entrance Examination" in the background of "Flash" and "Call a Flash" WeChat WeChat official account with the photos of candidates’ admission tickets and screenshots of orders, and can enjoy the discount of free of charge according to the prompts. The flash fee will be returned to the original account within 3-5 working days. During the national college entrance examination from June 7 to June 10, each admission ticket can enjoy the right of two free tickets per day.

In order to help candidates take the exam to the greatest extent, the transportation support department will give priority to ensuring the order service related to the college entrance examination and strive to respond to the candidates’ urgent delivery needs at the first time. The customer service department will also be on standby 24 hours a day, promising to give priority to the orders related to the college entrance examination.

Flash delivery, as a pioneer in the one-to-one express delivery industry, defines the service standard and service limitation of one-to-one express delivery. One-to-one service mode makes it clear that the flasher only serves one customer at a time from pickup to delivery, so the service is faster, more certain and safer, and can also provide various exclusive services for the majority of candidates.

In the face of unexpected situations such as traffic jams during the college entrance examination, flashers can avoid the impact of traffic jams to the greatest extent through flexible delivery tools such as electric cars and motorcycles, and deliver the items needed by candidates with the fastest speed.

Liu Xuezhu, the person in charge of foreign affairs of Flash, said: "Flash actively practices corporate social responsibility, and feeds back the society through multi-dimensional public welfare actions such as setting up volunteer service teams, caring for exams, and college entrance examination programs. The love test-assisting activity is a small charity action project that was launched in 2018. It aims to call on all the flashers to practice the concept of’ delivering with kindness’ and help the college entrance examination candidates to successfully take the test. "

Although the inventor of the dual-clutch gearbox is not Volkswagen, there is no doubt that the role of Germans in popularizing it. With the increasing sales of related models, some problems have also been exposed. On the other hand, most countries and regions, including China, have gradually upgraded their emission standards. For this reason, Volkswagen is constantly upgrading its dual-clutch gearbox. Today, let’s take a look at the latest "upgrade from 0 to 1".

○ Until today, the industry has not yet reached a conclusion about who invented the dual-clutch gearbox. Germans are proud of being the first to apply for patents, while French are proud of small-scale production;

○ Specific to the Volkswagen brand, the golf R32 in 2002 is the beginning of our familiar story;

○ Volkswagen Group took the lead in developing and producing a wet dual-clutch gearbox, and then introduced a dry dual-clutch gearbox to meet the needs of low-grade models.

Before launching the technical upgrade, let’s briefly review the current use of the dual-clutch gearbox of Volkswagen Group. In short, according to the horizontal and vertical layout of the powertrain, they named the dual-clutch gearbox DQ and DL respectively. Secondly, according to the tolerable torque, it is subdivided into different models.

Some dual clutch gearbox models of Volkswagen GroupWell-known dry/wet gears are equipped with DQ200 dry 7-speed golf 6DQ250 wet 6-speed DQ380 wet 7-speed DQ381 wet 7-speed DQ500 wet 7-speed Audi RS3DQ400e wet 6-speed GTEDL382 wet 7-speed DL501 wet 7-speed Volkswagen DL800 wet 7-speed, Lamborghini Huracán

The "upgrade from 0 to 1" we are going to talk about today is DQ380 and DQ381. Although both of them have been on the market for some time, their development concept will be gradually extended to other products in the DQ family, so they can be regarded as the embryonic form of the development of Volkswagen dual-clutch gearbox technology in the future.

The oil pressure of DQ380 gearbox is based on the mechanical gearbox oil pump, and the engine crankshaft drives the gearbox oil pump. After the engine stopped working, the oil pump lost power. When the driver needs to start again, the traditional mechanical oil pump needs to build up the pressure again, and there will be some delay.

DQ381 adds an electric motor oil pump, and the power comes from a 12V battery pack, so that there is still a power source after the engine is turned off, and the response speed of the vehicle will be faster.

In terms of oil, considering the factors such as reducing friction and emission, DQ381 gearbox oil is thinner than DQ380 gearbox oil, and its formula is slightly adjusted considering the requirements of heat dissipation, lubrication and force transmission.

Written in the back:

The congestion environment in the city has gradually shrunk the sales of manual gearboxes, and the corresponding market share of AT, CVT and DCT has greatly increased compared with 10 years ago. Among them, DCT, the dual clutch gearbox, is favored by manufacturers and consumers because of its relatively low manufacturing cost and compact structure. It takes time for technology to develop and mature. Volkswagen’s dual-clutch gearbox has problems in popularization, and it is also improved in step-by-step upgrade iteration.

Ten years ago, I first drove a new coastal highway on N247, which is a winding asphalt road with beautiful scenery. At that time, I tested the new BMW Active Hybrid 5-the first electrification technology in the BMW midsize car. Time came to 2023, and I was driving a 5-series car again, but this time it was all electric. BMW 8th Generation 5 Series: 2024 i5.

I5 inherits the more outstanding features of i7, that is to say, it is not an electric car on a special platform like iX SUV. On the contrary, electric and fuel vehicles share the same chassis structure, and BMW designed the CLAR platform to adapt, plug-in and electric power systems. From the outside, it is difficult to distinguish the i5 from the fuel version. Like the i7 and 7 series, this is intentional. Thankfully, this i5 is quite handsome.

Is i5 a single motor or a double motor? In the American market, BMW will launch two versions: the single-motor eDrive40 with rear drive and the dual-motor with all-wheel drive. Both of them are equipped with a ternary of 81.2kW·h, and BMW said that all i5 models support DC fast charging of up to 205kW, which is a big improvement compared with the i7′ s 195kW. When connected to a household Level 2 charger, the charging power is 11kW.

In the i5 eDrive40, the maximum power of the rear motor generates 250kW(335hp/340Ps) and 400Nm of torque, which is enough to accelerate this 4,916-pound (about 2227kg) car to 60 mph (about 100km/h) in 5.7 seconds, which is the same as that of the old ActiveHybrid 5. For daily driving, this speed is enough, especially because of the instantaneous torque of electric vehicles, the starting acceleration of 0-30 mph (0-48km/h) is always very fast. If you drive properly, the US Environmental Protection Agency (EPA) says that with this single motor configuration, the maximum cruising range can reach 295 miles (475km).

However, the performance of the i5 M60 xDrive is even better. It is equipped with a powerful 442kW(593hp/601PS) and 586 lb-ft (795Nm) torque. Installing the second electric drive unit on the front axle increased the weight by 331 pounds (about 150kg), but the extra power quickly offset the counterweight. The i5 M60 can accelerate to 60 mph (about 100km/h) in 3.7 seconds. However, the cruising range will be affected; According to the US Environmental Protection Agency,

Excellent daily driving experience

No matter what the power output is, the driving feeling of the i5 is as good as that of the BMW Fuel Edition 5 Series: it is smooth and comfortable on the highway, but it can also easily drive into the narrow B-class road curve. I tested the prototype i5 at the BMW proving ground in Miramas earlier this year, and I was deeply impressed by its performance. It seems that its driving characteristics have hardly changed since then.

I am driving an i5 eDrive40 equipped with optional M Sport suspension, electronically adjustable and 21-inch wheels (smaller 19-inch and 20-inch wheels are also provided). The suspension system of the vehicle is excellent, which can well filter out the bad road conditions common in small towns in Portugal.

Standard rear air suspension

All i5 models are equipped with self-balancing rear air suspension, which makes the rear of the vehicle softer, while the front double wishbone suspension can control the front of the car well, and at the same time, it can transmit enough feedback through the thick steering wheel.

Follow-up steering/active anti-roll

All i5 models can choose 2.5-degree rear axle steering, which helps to make the rear of the vehicle more stable in sharp corners, but only M60 is equipped with the new 48V active anti-roll technology of Series 5, which is very helpful to keep the car stable when crossing Portuguese hills.

Multi-gear adjustable kinetic energy recovery

As an electric vehicle, i5 relies on kinetic energy recovery to return some extra energy to the battery. There are many kinetic energy recovery efforts to choose from, which can be managed in the relatively cumbersome submenu of iDrive 8.5 (which will be introduced in detail later). My suggestion is to keep the i5 running in the B gear (one box below the D gear), so as to get the maximum regenerative energy. Moreover, never turn on the adaptive recovery function, which will increase or decrease the kinetic energy recovery according to the GPS route data. This sounds good in theory, but it will actually lead to inconsistent braking force.

Can you let go of your hands and drive automatically? Of course, the i5 can meet your needs-on a pre-planned highway, but unlike the BlueCruise or Super Cruise, you can use BMW’s Highway Assistant to drive for a long time without touching the steering wheel, and it won’t automatically shut down the system if you need to make a slight adjustment. Very simple.

The popular function introduced by i5 is gesture-based lane change technology. Basically, if you are using the highway assistant HS, and the system detects that you may need to change lanes, it will suggest changing lanes, and you only need to look at the corresponding side mirror to activate changing lanes. If you don’t want to take the advice of i5, just keep looking ahead. Again, very simple. And don’t worry, this technology will soon be launched on other BMW models equipped with highway assistants.

The fashionable interior is full of science and technology, and it is those small details that make the interior of i5 so excellent, such as the beautiful contrast sewing on the artificial leather seat, the backlight ambient light board or the glass buttons on the center console. There are even two on the wireless charging board in front of the cup holder.

A curved display screen integrates a 12.3-inch digital instrument and a 14.9-inch multimedia touch screen. The former has multiple reconfigurable displays and useful overlays, which can help you to follow each turn direction accurately. The screen on the right is the vehicle display window of iDrive 8.5, which is a good upgrade to the existing iDrive 8.0 technology. It adds a row of function buttons at the bottom of the display to facilitate quick access to common functions. This is a good thing, because our main menu is a bunch of small icons, which are difficult to click on while driving. BMW said that more improvements will be upgraded through OTA.

AirConsole may not be what we need: when you stop (such as charging), you can scan the QR code on your mobile phone and play one of 10 different video games on the 14.9-inch display. From ""to "",all kinds of games have non-brand versions to choose from. Although I don’t know whether playing with your mobile phone while waiting for i5 to start will improve the situation, you can try it. Up to seven people can connect and play games on the AirConsole, which will help to extend this situation to BMW’s seven-seat vehicles and enjoy the game.

About price

The 2024 i5 eDrive40 will be launched this autumn, with a starting price of US$ 67,795 (equivalent to about RMB 495,005) [including the destination freight of US$ 995 (equivalent to about RMB 7,265)]. This price is lower than the selling price of EQE 350+ and EQE 350+,which are US$ 76,050 (about RMB 555,279) and US$ 76,380 (about RMB 557,688.5) respectively. Interestingly, the price of i5 is only a few thousand dollars more expensive than the newly launched ActiveHybrid 5 in 2012, which is the performance of the affirmative action movement of electric vehicles.

For consumers who pursue power, the i5 M60 xDrive is another good choice, and the price is 85,095 US dollars (equivalent to about 621,321 yuan), which is lower than EQE with logo again. Although I like the thrill of 442kW(593hp/601PS) very much, I think the eDrive40 is more suitable for daily driving. First of all, it has no strange closed grille design, and 250kW(335hp/340Ps) power is fast enough. In addition, like the gray model in the picture, a well-equipped i5 eDrive40 only costs about 75,000 US dollars (equivalent to about 547,612.5 yuan).

The 5 Series is about to launch brand-new gasoline models: the 530i, the all-wheel drive 530i xDrive and the 540i xDrive. In addition, BMW will also launch M5 Touring, but this car is not for the North American market. At the same time, the highly anticipated will also be listed soon. Although electrification is the future trend, we also hope that the next major progress of 5 series electrification can be realized as soon as possible, instead of spending another ten years.

How much do you estimate the starting price of i5 in China?

　　CCTV News:Sailing in Tianhe, building a dream palace. In the past six years, the Tianzhou "family" has successfully launched six cargo spacecraft. While successfully completing the task of delivering express delivery to space, we continue to meet the faster and higher delivery requirements of China Space Station through technological breakthroughs. Let’s review the "highlight moments" when Tianzhou "family" successfully delivered "space express" in recent years.

　　Tianzhou-1: China Aerospace’s first cargo spacecraft.

　　On April 20, 2017, China’s first cargo spacecraft Tianzhou-1 was successfully launched at the Wenchang launch site in Hainan. During this space express delivery trip, Tianzhou-1 carried out propellant replenishment between aircrafts for the first time in orbit, Tiangong-2 successfully carried out the first propellant replenishment in orbit in China, and carried out several propellant replenishment tests. For the assembly, construction and long-term operation of China Space Station, clear the last obstacle on energy supply.

　　Tianzhou-2: Realizing all-weather autonomous rendezvous and docking

　　On May 29th, 2021, Tianzhou-2 cargo spacecraft was successfully launched. After technical upgrading, Tianzhou-2 has the capability of all-weather and autonomous rendezvous and docking for air and space emergency rapid response. Tianzhou-2 is the first spacecraft in the construction stage of the space station project, with an upward capacity of 6.9 tons of materials, carrying enough daily necessities for three astronauts to stay in the space station for three months, materials for conducting space science experiments, and propellant for replenishing the space station and core cabin.

　　Tianzhou No.3: Double the daily necessities, and the delivery time is shorter.

　　On September 20, 2021, with the successful launch of Tianzhou III, the Tianzhou family added a new "space courier brother". Compared with Tianzhou-2, the daily necessities carried by Tianzhou-3 spacecraft have doubled, which can meet the needs of three astronauts staying in the space station for six months. With the support of the high-tech means of "Beidou+Lidar+visual navigation sensor", Tianzhou-3 further shortened the rendezvous and docking time of cargo spacecraft and Tianhe core cabin from 8 hours to 6.5 hours, and further improved the delivery speed.

　　Tianzhou-4: the first cargo spacecraft in the construction stage of the space station

　　In the early morning of May 10, 2022, the Tianzhou-4 cargo spacecraft was launched, and the first launch mission of China’s space station was a complete success. Tianzhou-4 was loaded with consumables, practical (test) devices and other materials that three astronauts of Shenzhou-14 stayed in orbit for six months. Among them, there were 32 kinds of vegetables and foods. In addition, new types such as holiday food, reward food and blind box food have been added. Opening the blind box may mean a surprise, which is also a way to adjust the psychological state for astronauts who have been in orbit for a long time.

　　Tianzhou No.5: "Space Express" will arrive in two hours!

　　On November 12, 2022, the successful launch of Tianzhou-5 set a world record. The two-hour autonomous rapid rendezvous and docking of the cargo spacecraft and the space station assembly can greatly improve China’s space emergency rescue capability, greatly shorten the transportation time, and make it possible to transport special fresh experiments. If this technology is applied to the Shenzhou manned spacecraft, it will greatly reduce the flight time of astronauts to the space station. It is of great practical significance for the long-term on-orbit operation of China’s space station.

　　Tianzhou-6: At present, the spacecraft with the strongest cargo capacity in the world.

　　On May 10th, Tianzhou-6 was launched. Tianzhou-6 is a new batch of cargo spacecraft, and the developers have improved its internal structure, which makes the cargo capacity of Tianzhou-6 cargo spacecraft increase from 6.9 tons in the past to 7.4 tons. After the propulsion module was changed from the original 8-tank configuration to the 4-tank configuration, the volume of the cargo module was further expanded, and the effective loading volume of the cargo module of Tianzhou-6 was increased from 18.1 cubic meters to 22.5 cubic meters.

　　The launch mission of Tianzhou-6 cargo spacecraft was a complete success.

　　At 21: 22 on May 10th, Beijing time, the Long March 7 Tele-7 carrier rocket carrying the Tianzhou-6 cargo spacecraft was successfully ignited and launched at the Wenchang Space Launch Site in China. This mission is the first time that China’s manned spaceflight project has entered the application and development stage of the space station.

　　About 10 minutes later, the Tianzhou-6 cargo spacecraft was successfully separated from the rocket and entered the scheduled orbit. After that, the solar panels of the spacecraft started working smoothly and the launch was a complete success.

　　Tian Yurong, Deputy Commander of the Long March 7 Launch Vehicle of the First Academy of Aerospace Science and Technology Group:In the preparation process before launching, all the actions are done in one go, and the final flight result is also very satisfactory. The accuracy of orbit entry is very high, that is, it is higher every time, creating new heights and accuracy. In this rocket, we have further improved the reliability of the rocket through the optimization of single machine and system products, from 0.985 to 0.987.

　　The Tianzhou-6 cargo spacecraft was loaded with consumables, propellants, applied experiments and test devices, etc., which were stored in orbit by six astronauts of Shenzhou 16 and Shenzhou 17. In order to improve the cargo transportation capacity, the Tianzhou-6 cargo spacecraft was optimized and improved in this mission, and the launch demand of the cargo spacecraft was optimized from twice a year to three times every two years, effectively reducing the transportation cost. In addition, the spacecraft is also equipped with Dalian University of Technology experimental satellites and other projects.

　　Wang Zengli, Chief Responsibility Officer of xichang satellite launch center Technology Department:This mission is the first mission in the application and development stage of the space station, and it is also the first mission of this new cargo ship, because there are still some changes between this cargo ship and the previous construction stage. In the follow-up mission, the cargo ship of this mission is basically the basic type. In the past 30 years, our country’s capabilities have been continuously improved, whether from space launch or space measurement and control, from near-earth to deep space.

　　Chen Jie, Director of Comprehensive Planning Bureau of China Manned Space Engineering Office:In the future, we will further reduce costs and enhance our capabilities. To this end, we will develop a new generation of reusable manned space transportation system. According to the new mission plan, the space station will operate for more than 10 years, with one or two cargo replenishment missions, two manned missions and the on-orbit rotation of astronauts every year. At the same time, we will also train international astronauts to participate in our joint flight.

Its grade represents its performance standard and quality grade, and it can reflect the key indexes such as fluidity, lubricity and cleanliness of engine oil at different temperatures. To judge the performance of engine oil, there are usually the following aspects:

Engine oil is generally divided into:, semi-synthetic oil,. The characteristics of these three oils are:

Mineral oil: low cost, although imported additives are added to mineral oil now, the service life is generally about half a year.

Semi-synthetic oil: It has good oxidation resistance, and it is a very good long-lasting engine oil, with a service life of about one year.

Synthetic oil: long service life, stable performance, but high price.

The "grade" of engine oil can be classified according to the standards of different international organizations and the attributes of engine oil.：

1. SAE (American Society of Automotive Engineers) classifies oil according to its viscosity value.

For example, SAE 5W-30, where W stands for winter, and the number before W stands for flow viscosity at low temperature. The smaller the value, the better the fluidity and the better the protection of the vehicle during cold start. The number after W represents the viscosity at 100 degrees, and the higher the number, the better the viscosity.

2，(）

According to the quality grade of engine oil, the higher the number, the higher the grade of engine oil.

A/B series: generally suitable for light-duty diesel engines.

C series: suitable for catalyst engines, C1-C4, and C3 or above are generally used for engines.

E series: heavy duty diesel engine.

3. API and ILSAC(& International Lubricating Oil Standards and Approval Committee) are classified according to the environmental protection grade of engine oil.

The series beginning with A and S represents gasoline engine oil, and the specifications are: API SA … Sn.

The series beginning with B and C represents diesel engine oil, with specifications of API CA……, CG-4, CH-4 and CI-4.

C, when S and C exist at the same time, it means that it is a universal type of gasoline and diesel.

D, the letters after S and C mean: from SA to SN. The farther back, the higher the environmental protection level. In-cylinder direct injection should be at least SN.

E, ILSAC adopts a higher engine oil quality grade evaluation standard, which requires further GF-5 specification evaluation of SN-grade engine oil passed by API. It is required to improve fuel economy, compatibility with exhaust system and prolong engine service life, so GF-5 standard is higher than SN.

Is the performance of engine oil good? How to judge?

It mainly depends on the recommendation of the vehicle manufacturer and the specific requirements of the engine. The following are some factors that are usually considered when choosing family car oil.

1. According to the user’s manual or maintenance guide of the vehicle, the engine oil type and annual grade suitable for this model are usually recommended, and it is most important to follow the manufacturer’s recommendation.

2. Different types of engines may require different types of engine oil. For example, high performance requires higher viscosity engine oil to provide better lubrication protection.

3, climatic conditions, according to the climatic conditions of your location, choose the appropriate viscosity, vehicles in cold areas need lower viscosity engine oil 0W-20, so as to be easy to start at low temperature and protect the engine. Vehicles in hot areas may need higher viscosity oils such as 10W-40 and 15W-50 to maintain lubricity at high temperatures.

4, environmental protection, some places with environmental protection requirements require the use of low-flow or low-phosphorus engine oil to reduce the environmental impact.

5, personal driving habits, often driving at high speed or heavy load, may need more advanced engine oil to provide additional protection.

6. With the increase of vehicle age, engine wear will increase. At this time, engine oil with higher viscosity or specific formula is needed to provide better protection.

Generally speaking, domestic users usually use 5W-30 or 10 or 10W-40 engine oil, but it is better to decide the appropriate engine oil according to the manufacturer’s recommendation and personal actual situation.

The above is my previous knowledge about engine oil.

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The following are the precautions for oil change

1, be sure to buy genuine engine oil, machine filter.

2, it is not impossible to change yourself, the key is to save those wages and ignore them compared with their own safety. Except for those who like to do it.

3, don’t listen to those bloggers who make you, 20,000 kilometers of maintenance all right, according to the maintenance manual, it’s right, if they are so powerful, what do they need the factory’s auto engineers for?

4. Some fans asked whether the oil was put away or pumped well. Is it necessary to open another article on this?

5, the oil must be quantified, and it is not good to have more or less.

6, record the oil change mileage, in order to grasp the oil change time next time. Generally, there are some in the store, but some are lazy or forget, so you should remember to remind them.

Qiu Xiaofeng

Managing Director of CICC and Chief Analyst of Oil, Gas and Chemical Industry

Won the top two in the new wealth petrochemical industry for 12 consecutive years.

Using biological manufacturing technology instead of chemical processing will be an important way to reduce carbon emissions. How much carbon emissions can bio-manufacturing technology reduce? Which tracks are more advantageous among bio-based chemicals? What characteristics will enterprises stand out? Qiu Xiaofeng, managing director of CICC and chief analyst of oil, gas and chemical industry, explains it in detail for you.

The carbon emissions of bio-based products can be reduced by 60% to 70%, and the two major tracks have more advantages.

Qiu Xiaofeng said that products made from starch, sugar and other plants are bio-based products, and their carbon emissions can be reduced by 60% to 70% compared with petroleum-based products.

Among the many tracks of bio-based products, two tracks have more advantages: biodiesel and bio-aviation kerosene, and bio-based plastics.

Biodiesel is the best emission reduction scheme for commercial heavy trucks in the next decade, and hydrogen energy will be the final scheme.

Among bio-based products, biodiesel is the most important fuel in production and demand. In Qiu Xiaofeng’s view, at present, biodiesel technology has a high maturity and will be the best solution to reduce carbon emissions in public commercial vehicles such as heavy trucks in the next decade. Qiu Xiaofeng believes that in the longer term, with the maturity of water electrolysis hydrogen technology and the decline of photovoltaic power generation cost, the final solution will be hydrogen energy.

The market size of bio-based chemicals may reach 3 trillion yuan.

For the second category of bio-based products — — For bio-based chemicals, some analysts believe that almost all the chemicals known at present have corresponding bio-manufacturing routes, and large-scale amplification is expected. Qiu Xiaofeng said that bio-based chemicals have a wide range of applications, such as plastic bags, disposable lunch boxes, clothes, high-temperature resistant materials, etc. It is estimated that the overall market size of bio-based chemicals may reach 2 trillion to 3 trillion yuan by 2040.

Degradable plastics are expected to emerge in the "golden age"

Qiu Xiaofeng believes that in 2021, the degradable plastics industry will usher in a "golden age" in which hundreds of people compete, and PBAT and PLA polylactic acid will stand out. Due to the different technical points, the winning enterprises in their respective fields have the following characteristics:

PBAT: Controlling raw materials on a large scale and bringing them to market at a low price.

PLA polylactic acid: strong technical ability