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Meituan wants to make a ＂dry rice version of Pinduoduo＂？

Original, Bohu team, Bohu Finance

Lemon tea for 0.1 yuan, pig’s foot rice for 4.9 yuan, are the takeaways so cheap now?

This is not the case. Recently, Qiuxiang found that every day at the meal point, the major fish groups began to forward a link called "Meituan has a good meal". Click on it to take a look, good guy! The original takeaway of 20 or 30 is only 4 yuan 9, 3 yuan 9, 1 yuan 9, or even 0.1 yuan here!!!

How do you order these cheap takeaways? Two words: fight the order. At Meituan, as long as there are two people, you can successfully fight the order. You can initiate the fight yourself, or you can fight other people’s orders, and even the platform will help you match your friends, and there is no delivery fee.

Isn’t this recipe very similar to an old friend of ours?! Yes, Meituan is using Pinduoduo to make takeout.

Then the question is, how did such a cheap meal come about?

First of all, the model of food supply is that the platform decides which meals to sell, and after giving the maximum price and the minimum specifications of the meal, it will target investment. For example, for a fried chicken + Coke, the maximum price given by the platform is 15 yuan. You can sell it for 15 yuan, or you can sell it for 4 yuan 9, but the cheaper you sell it, the more traffic you get. So ah, in exchange for price, this price will be hit.

Secondly, most of the merchants who put together a good meal are small and medium-sized merchants who rely on online orders, which can be understood as those white-label small merchants who are qualified but have no facade, and they only need to cooperate with Meituan to make low-priced products. In terms of traffic, the platform will handle it. In addition, without having to bear high store rents, the unit price of this meal can be controlled lower.

Finally, in terms of delivery, a new type of delivery method has also been adopted: the running mode.

It means that the system will give priority to running riders who place orders at the same merchant and have similar addresses, which allows a rider to complete at least two orders on the same delivery path, improving delivery efficiency.

It can be said that this delivery model not only reduces delivery costs, but also improves the efficiency of riders and merchants, and also brings more affordable ordering prices to customers, achieving a win-win situation for all three parties!

This is not surprising, the establishment of less than 3 years of good meal, to achieve rapid growth. In 2022, good meal daily order sales reached one million; 2023 after entering the first-tier cities, the daily order volume exceeded 3 million, accounting for Meituan takeaway daily order volume of 6%; and in the first quarter of this year, good meal daily order volume has been close to 5 million, almost Meituan takeaway last year in the fourth quarter of the daily order volume of 10%.

It seems that Meituan has succeeded in doing takeaway in the way of Pinduoduo.

But in the face of the ultimate cost performance, there are also many problems with a good meal. For example, the hygiene and safety of the meal is difficult to control. Merchants may use some low-quality ingredients in order to reduce costs. Some netizens complained that they ordered lymphatic meat on the meal, but the merchant refused to refund; even some merchants blew up the roujiamo from the refrigerator to the door, and still picked it up for heating.

Moreover, because of the smooth running mode of putting together a good meal, the rider’s delivery fee is compressed, which also reduces the rider’s enthusiasm for food delivery, and there are problems such as the perfunctory attitude of the rider.

Then why are so many people still using the good meal? In front of the 50 yuan fried chicken, for many people, the 9 yuan 9 burger + chicken roll is life!

By the way, have you ever used a good meal to order takeout?

Original title: "Meituan wants to make a" dry rice version of Pinduoduo "?"

Read the original text

After five years of market experience, how should we evaluate Geely’s CMA architecture now？

?By 2020, when it comes to the R&D and production of automobiles, it must be inseparable from such terms as "platform" and "architecture". In the past ten years, most automobile manufacturers with a certain scale have launched so-called platforms or architectures, such as the famous MQB, the PSA Group EMP, which is not a big hit, and TNGA, which came from behind.

After the acquisition, the biggest move can be said to be to jointly develop the CMA architecture, whose full name is Compact Modular Architecture, which was developed in the China-Europe R&D Center (CEVT) in Gothenburg, Sweden, while CEVT was a European R&D center established by the holding group in 2013 with global resources.

Nowadays, we can see that there are more and more models developed based on CMA architecture, including branded models, branded models and every brand model that has come out so far. In this case, it is time for us to summarize the characteristics of CMA architecture in many products. Of course, there are advantages and disadvantages in these characteristics.

variety

Many models have been born under CMA framework, among which only 01, 02, 03, 05 and the newly released 06 have covered many different types of models, including SUV, crossover, car and coupe SUV.

In fact, for any modular architecture or platform, it is only a basic project to be compatible with different vehicle types. For example, as small as polo and as large as Touang, they are all products of MQB platform, and the TNGA architecture basically covers all new models and. Therefore, for the CMA architecture of-,it is not a miraculous thing to develop a variety of models based on it, but it is just a matter of doing its job.

So what does diversity mean here?

Actually, it refers to the diversity of personality. Some time ago, whenever we talked about the MQB platform, we would think that most MQB platform cars are the same model, and there is not much difference between models, and even there will be similar driving quality of models with different positioning heights. This is how the legendary platform without (m) area (q) and (b) came into being, and there is a view that hundreds of thousands of MQBs are more worth buying than 200,000 or even 300,000 MQBs.

However, in the CMA architecture, different models still have different personalities.

For example, 03+ and 05 equipped with the same powertrain are completely different in driving experience. I know you will say that 03+ is a performance car with special positioning, and the driving experience must be different, but this personality difference can also be reflected in other models. For example, 01 and 05, 01, which are both SUV foundations and have similar sizes, are relatively more comfortable, while 05′ s chassis is more sporty in terms of lateral support.

In addition to the diversity of personality, CMA architecture also has diversity in the types of powertrain.

In terms of traditional fuel power, CMA architecture provides a variety of combinations of engines and gearboxes. The engines are 1.5T and 2.0T, and the matching of gearboxes will be selected according to different models or even different driving forms. At present, gearboxes appearing on CMA architecture are 6AT, 7DCT and 8AT.

If it is the platform architecture of other manufacturers, it usually does not provide so many choices. Needless to say, the driving form must be compatible with the four-wheel drive system.

In fact, in order to realize the diversity of products, CMA architecture divides vehicle components into25 super modulesIn addition to the familiar parts such as engine and gearbox, there are also parts related to body structure and electrification. This is equivalent to playing with permutation and combination. If the number of modules is enough, the more schemes can be pieced together, which can bring different effects to the types and personalities of vehicles.

More importantly, CMA architecture is also compatible with the R&D and production of pure electric vehicles, which is one of the advantages of CMA architecture compared with some other automobile R&D and production architecture platforms.

Speaking of this, I have to mention its high-end electric car brand-Polestar.Polar star.

In Polestar’s product series, there is a very important product, which will be officially introduced to the market this year, that is, Polestar 2, which is a pure electric vehicle aimed at positioning. The pre-sale price announced before is less than 300,000.

This pure electric vehicle is built based on CMA architecture, and it is also the first pure electric vehicle under CMA architecture. However, the pre-production preparation stage of Polestar 2 takes a little longer, and many people can’t wait, so start delivery quickly.

unity

Speaking of diversity, let’s talk about unity. You may feel contradictory. Since there are many kinds, how can we unify them?

Do you still remember that the CMA architecture just mentioned divides the vehicle parts into 25 super modules? These different modules are combined together through a unified interface. The CMA architecture also has a standardized manufacturing process list, which can effectively control different models to adopt the same manufacturing processes and standards in different production lines, thus ensuring the uniformity of vehicle quality.

This can also be found in the actual experience. Although the models born on the CMA architecture have different personalities, they are relatively consistent in some aspects of experience.

Such as sitting posture.

Although SUVs and cars are born with different ride heights, due to the existence of modularity, the bending angles of the upper and lower limbs of the body and the relative positions with the steering wheel and pedals can be unified, so that drivers can find familiar feelings when driving different models of CMA architecture.

The adjustment range of the seat has a standard range, which is 262.2mm in front and back, and 65mm in height. Even in the seat adjustmentNVHOn the other hand, CMA architecture also has its own higher requirements. Their standard is that the maximum sound of seat operation is only 38dB, which is much lower than the mainstream 45dB.

There is also the NVH performance of driving. Although different models will be adjusted in different orientations according to their positioning, the CMA-based models have a very good foundation in the performance of vibration filtering and quietness. Even a car with a 20-inch rim like the 05 is inherently unfavorable to the handling of road shattering, but it still has a very stable performance on the "Belgian Road".

One of the advantages brought by uniformity is the improvement of the universality of parts, which is of great help to reduce the cost of research and development and production.

In fact, the theory that modular platforms or architectures can reduce costs has appeared since MQB platform, but on some platforms or architectures of MQB and other brands, as consumers, it seems that they can’t see what benefits the manufacturers have brought to consumers by reducing costs. First, the quality of cars may not be improved, and second, the price may not be cheaper than before.

However, in the models developed by the brand and even some brands using CMA architecture, we have seen the benefits brought by the manufacturer to consumers by reducing costs, that is, giving consideration to quality and beautiful price.

It’s just that Rut Jun thinks this is also due to the market structure, especially as such an emerging brand, we can see that their products do have advantages in quality and deserve higher prices. However, once the price is high, consumers are less willing to buy new cars. After all, the reality is cruel.

forward looking

As a rising star in automobile R&D and production infrastructure, CMA can show more excellent forward-looking in some details.

Today’s cars, even if they are not pure electric vehicles with new energy, have become more and more complicated in the electrical system, because today’s cars are emphasizing intelligence. An important step to realize the intelligentization of automobiles is to move towards the goal of unmanned driving or autonomous driving. What is the biggest obstacle in front of unmanned driving or autonomous driving?

The answer isarithmetic speed.

In order to achieve higher operation speed, the requirements for vehicle electronic system are higher.

CMA architecture also noticed this at the beginning of development, so it designed electrical system redundancy that can easily cope with the next 10-15 years. At present, the field of intelligent driving is developing very fast, so it was prepared for the intelligent development in the next 15-20 years in the development stage five years ago, which fully reflects the forward-looking nature of CMA architecture.

The forward-looking of CMA architecture is also reflected inCompatibility of power systemIn fact, as we just said, CMA architecture not only has gasoline vehicles, but the 2.0T engine can not only easily meet the stringent national 6 emission standards at this stage, but also be able to cope with the abnormal European 7 emission standards.

In addition, CMA architecture will also have plug-in, light-mixing, and pure electric vehicles.

You may ask, pure electric vehicles and traditional fuel vehicles share the platform architecture, so will this basic pure electric vehicle be a magic work of "changing oil into electricity"? This question does exist, just like everyone’s question about not developing a platform architecture for pure electric vehicles alone.

Rut Jun believes that it depends on whether the platform architecture has considered the R&D and production of pure electric vehicles at the beginning of development. The "oil-to-electricity" we say refers to those platforms that originally only had oil vehicles, but later abruptly added pure electric vehicles. For example, the CMA architecture has included the pure electric power form into the development goal at the beginning of development, which does not belong to "oil to electricity".

Playability

For some people who love cars and cars, they often take playability into consideration when choosing models, and playability may be part of the current lack or limitation of CMA architecture.

The so-called playability mainly refers to the "tossing space" left by the vehicle to the owner.

For example, the MQB platform is probably one of the architecture platforms with strong playability at present. One of the major reasons is that there are already many models born on the MQB platform, and they also have a large number in the market. Then many automotive aftermarket brands will launch modified and upgraded products for MQB platform models. These modifications and upgrades usually include power, chassis and other parts of the kit, and can even be divided into several levels, which is what we often call "first-order".

The CMA architecture is not so mature in this respect. The main reason is that the CMA architecture is still in the process of development and growth, and its ownership is not large enough. Moreover, the previous CMA architecture models did not focus on attracting consumers who love to play with cars.

One of the phenomena of its products can illustrate this point: 03+, as the first China performance car, does have a good foundation in itself, but Rut Jun learned from some channels that the entry-level upgrade scheme commonly used by car players is not feasible at all on 03+.Brush ECU.

Perhaps the technology derived from it has a high level of safety protection, so it is impossible to crack the ECU engine control computer, and the power curve can only be changed through the external computer, and this form of upgrade is very limited for 03+. This hardly leaves the so-called "tossing space" for car users.

At the same time, due to the relatively small demand, 03+ and even other CMA-based models are also very limited in the selection of chassis upgrades.

Golf on the MQB platform, such as Bilstein, SACHS, Tein, Eibach and KYB, can provide countless choices and have a huge modified ecosystem, while CMA 03 can’t find mass-produced big brand modified parts, and there is almost no ecosystem.

In view of the fact that the brands that occupy a big position in the CMA architecture are mainly young consumers, and may have certain needs in changing cars, Rutjun thinks that expanding the playability of CMA architecture is-the next thing to be promoted. After all, cars like 03+ have been built, and the owners have to toss and turn.

Write it at the end

As a modular architecture jointly developed by and, the models born on the basis of CMA can bring consumers a good sense of quality whether driving or riding, especially in some models of brands and brands, and it is really exciting to create a leapfrog driving experience at a price that most consumers are more acceptable.

This has something to do with many goals and standards set by CMA architecture at the beginning of its development. But then again, although there are many models of CMA architecture, compared with the platform architecture introduced by other manufacturers relatively early, the volume is still relatively small. By enriching the product line and expanding the quantity, we can further exert the advantages of modular architecture.

The question is, what kind of products should we continue to launch next to attract consumers? There are many kinds of SUVs, so is there any chance in the car market? Can pure electric vehicle products be decentralized to brands or even brands?

＂Travel+＂was advanced with electricity, and Jietu Shanhai L9 led the mixed lineup to land at Guangzhou Auto Show.

China Economic News Network (Liu Chenxi)Following the release of Jietu Shanhai new energy sequence to screen the whole network, Jietu Automobile once again detonated its concern. On November 17th, 2023 Guangzhou Auto Show was grandly opened. Jetway Auto made a heavy appearance with all-star lineups such as Jetway Shanhai L9, Jetway Shanhai L6, Jetway Traveler, Jetway Traveler C-DM and Jetway Traveler JMK modified cars, showing Jetway "Travel" in all dimensions.^+”The latest achievement of advanced strategy electrification tells the brand that thank you sir is fully committed to the new energy track.

Run fast, accelerate the sprint of 300,000 annual sales target.

Since its establishment, Jetway has always adhered to "travel"⁺"Strategic initial intention, creating" travel "from 2018 Jietu product sequence.⁺"Market segmentation, by 2023, Jietu Shanhai new energy sequence will open up a brand-new track of" travel+hybrid ",and Jietu Automobile will make great strides in the automobile stock market, creating a new record for the growth rate of China SUV brand with strong growth, and creating an exciting speed for China automobile market.

This year, in the face of the extremely involuted China auto market, Jetway once again ran out of the "Jetway Acceleration". In October, Jetway sold as many as 38,053 vehicles a month, 1-mdash; The cumulative sales volume in October increased by 64.7% year-on-year, making China’s cutting-edge SUV car companies the first in growth rate; Up to now, the cumulative sales volume in 2023 has reached 256,000 vehicles, ranking fifth in China brand fuel SUV market, ranking among the first camp, and successfully winning the trust of 870,000+users and the love of 39 million fans around the world. It is estimated that by the end of 2023, the annual sales volume of Jietu Automobile will exceed 300,000, and the total sales volume in the first five years will exceed 950,000.

Travelers "wild" to help out, achieving new growth in Jietu market

Jetway’s beautiful sales report card is inseparable from the strong help of Jetway travelers. Based on the real needs of users, Jietu Traveler has been created by more than 30 rounds of users. It has four advantages: beauty, joy, city and wildness, which can not only give users the excitement when they move forward, but also provide users with the comfort when they stop. It can not only satisfy users’ pursuit of universal beauty, but also realize the display of self-personality. Its appearance has successfully opened up the market segment of off-road SUV for travel and expanded and upgraded "travel"⁺"Strategy, let Jietu brand more and more" wild ".

Nowadays, cross-country travel has become a new fashion, and the appearance of Jietu travelers positioning "cross-country SUV" is the peak. The new car sold 7931 vehicles in the first month of listing, and the order has reached 43926 vehicles so far; Among them, the proportion of four-wheel drive purchase is as high as 85%, and the proportion of ecological modification is 62%, which fully shows the market popularity and user preference of Jetway travelers, and strongly helps Jetway to sprint through the annual sales target of 300,000 at the end of the year.

three

C-DM, a Jietu traveler who appeared at this auto show, directly hit the new trend of young people’s electric travel in the new era. The new car adopts Chery Kunpeng super-performance electric hybrid C-DM, equipped with 1.5TD DHE+3DHT165 high-efficiency hybrid power system, with a comprehensive battery life of 1000 km+; With 6.6kW external discharge function, it supports various camping equipment such as ovens and electric cookers. Using Qualcomm Snapdragon 8155 chip, it has the advantages of outstanding face value, powerful power, long comprehensive battery life and first-class safety performance. The new car is expected to go on the market in the first quarter of 2024, which is bound to become a new sales growth point of Jietu Automobile.

Shanhai L9 led the way, "Travel!⁺"Strategy advanced again.

In the face of the fierce wave of new energy, Jietu Automobile accelerated its overall transformation to new energy, and launched Jietu Shanhai new energy product series on the eve of Guangzhou Auto Show, and officially listed its first model — — "Big family, big seven-seat super hybrid SUV" Jetway Shanhai L9, driven by electric hybrid "travel"⁺"Strategy advanced again.

Jietu Shanhai is positioned as a "leader of hybrid cross-country travel", and will launch a strategic layout from five aspects: new sequence, new products, new channels, new ecology and new team to build the world’s first hybrid cross-country brand. Jietu Shanhai relies on Kunlun cross-country platform, Kunpeng super hybrid C-DM technology, lion intelligent cabin/great wisdom driving, extremely changeable space scene ability, "travel"⁺Ecological platform and other five advantages to build the core of product technology, to meet the new travel needs of users who are more convenient, more rational, more immersed and more social.

four

At the auto show, Jietu Shanhai L9 made its first public appearance after listing. The new car has a long body of 4862mm and a long wheelbase of 2850mm, which is extremely changeable and more in line with the needs of large family users. Using Kunpeng Super Hybrid C-DM, it has an industry-leading thermal efficiency of 44.5%, and the cruising range under comprehensive working conditions reaches 1100Km；; Equipped with Qualcomm 8155 high computing platform, it provides more than 15,000 books on the road, which is convenient for users to plant their own tourist routes at any time. Jietu Shanhai L9 is also the first hybrid model that promises the lifetime warranty of the whole vehicle, and it can be called "the most ideal car with a class of 200,000".

In the next two years, Jietu Shanhai will launch eight new hybrid products, including urban Yueye SUV series, hard-core off-road SUV series and pickup truck series, covering mixed family travel and mixed off-road travel. And innovate the service mode to create exclusive "travel"⁺"The new ecology, it is estimated that 300 mountain and sea experience centers will be officially opened by the end of this year, and the number will increase to 450 by the end of 2024, providing users with 24-hour free charging, free opening of lounges and live broadcast rooms, and 50 km on-site test drive experience services anytime and anywhere.

Facing the future, Jetway will continue to insist on "travel"⁺At the beginning of the strategy, with Jietu Shanhai as the fulcrum, we will create a new business card of "travel+mixing" and create a charged "travel" for users.⁺"Full-scene value experience, driving the brand up and value jump, striding forward towards the goal of becoming a club with an annual sales of one million in 2026, in the" travel "⁺"Run out of the new speed on the road.

Dongguan xingyue l zhiqing has a big price cut! The latest offer is 152,700 yuan, and the discount waits for no one.

[car home Dongguan Preferential Promotion Channel] Good news! Preferential activities are being carried out in Dongguan, with a maximum discount of 0.7 million! The minimum starting price is 152,700 yuan. You can get a higher discount by clicking "Check the car price" in the quotation form. Seize the opportunity and learn more details!

The exterior design of Xingyue L Zhiqing is very fashionable. The front face is decorated with a large area of chrome plating, with a unique air intake grille design, which shows the sense of movement and technology of the vehicle. The body lines are smooth, and the overall style is simple and exquisite, which is highly recognizable. The side of the car body adopts streamlined design, and the lines are simple and smooth, which is more dynamic with the luggage rack and large-size wheels on the roof. The rear part of the car is also decorated with chrome, and the design of two exhaust holes on both sides also increases the sporty atmosphere of the car. In addition, Xingyue L Zhiqing is also equipped with LED headlights and penetrating taillights to make the whole rear look more fashionable. Generally speaking, the design of Xingyue L Zhiqing is simple and exquisite, full of sense of technology and sports, and it is an excellent model.

Xingyue L Zhiqing is a medium-sized SUV, with a body size of 4795*1895*1689mm, a wheelbase of 2845mm, and a front track and a rear track of 1610 mm. The side lines of the car body are smooth, and the overall shape is dynamic and fashionable. Tyre size is 245/45 R20, and the rim has a unique style and a sense of movement. The design and performance of this model are excellent, and it is worth looking forward to.

The interior design of Xingyue L Zhiqing is fashionable and atmospheric, with leather steering wheel, which is comfortable and can be manually adjusted up and down+back and forth. The 12.3-inch central control screen has high definition, and supports the voice recognition control system of multimedia, navigation, telephone, air conditioner, skylight and window, which is convenient for drivers to operate. There are two USB/Type-C interfaces in the front row and one in the back row, and there is also a wireless charging function of the mobile phone. The seat is made of imitation leather, and the front and rear, backrest, height and lumbar support of the main and co-pilot seats can be adjusted. The driver’s seat also has heating and ventilation functions, and the co-pilot seat can be adjusted. The backrest of the second row of seats can be adjusted, and the rear seats support proportional reclining, providing more space for passengers. The overall interior design is exquisite, and the details are handled in place, which brings a comfortable driving experience for drivers and passengers.

Xingyue L Zhiqing is equipped with a 1.5T 163 horsepower L4 engine with a maximum power of 120kW and a maximum torque of 255n m.. This engine adopts advanced technology, which provides excellent power performance and fuel economy. At the same time, the equipped 3-speed DHT gearbox makes shifting smoother and driving more comfortable. No matter on urban roads or highways, Xingyue L Zhiqing can bring you a smooth driving experience.

Thanks to car home car owners for their comments on Star Yue L Zhiqing. As he said, the white color of the bright moon gives people a sense of luxury, the whole car body is round and full, and the paint surface and gaps are delicate and uniform, which shows that Geely’s workmanship is still relatively fine. The waistline has a layered feeling, and there is no softness. The penetrating headlights show the calm atmosphere, and the whole exterior looks like a handsome and talented person, and the heroic spirit is compelling. These details show the exquisite craftsmanship and high-quality manufacturing of Xingyue L Zhiqing. As the owner said, domestic cars have made a great leap in appearance in recent years, and Xingyue L Zhiqing is one of the best. We are convinced that Xingyue L Zhiqing will bring better driving experience and comfort to car owners. Thank you again for your support and trust!

From dangerous goods to safe endurance, they have created a rechargeable world.

　　When going out, only one thing is allowed, and many people will choose mobile phones; To buy your first car, you may want to try a new energy electric car & HELIP; …

　　These common choices in our daily life all exist because of the same thing — — Lithium battery.

　　At 17: 45 Beijing time yesterday, the Royal Swedish Academy of Sciences announced that the 2019 Nobel Prize in Chemistry was awarded to Professor John B Goodenough, Professor Stanley Whittingham and Professor Yoshino in recognition of their contributions to the development of lithium batteries.

　　The Nobel Prize in Chemistry once again makes people feel that they have flown from the top of the academic pyramid to ordinary people. The distance is so close, even within reach.

　　With the lightest metal in the world

　　Win the heaviest prize in the world

　　When the power of your mobile phone is only 10%, I believe that many people’s anxiety and tension have reached the peak. At this time, if you suddenly find a charging treasure, it seems that life has been saved at that moment.

　　Modern people can’t imagine life without the assistance of lithium batteries.

　　Therefore, when the Royal Swedish Academy of Sciences awarded the 2019 Nobel Prize in Chemistry to three scientists from the United States, Britain and Japan who made outstanding contributions to the development of lithium batteries, people at the scene were extremely interested in it.

　　Lithium, the least dense and lightest metal in the world.

　　Although it is light and small, it has a big temper — — It is the most active metal among known elements (including radioactive elements).

　　Therefore, it has become a very good material for developing batteries, but it has both advantages and disadvantages. When lithium metal is used as the electrode, there are huge hidden dangers — — This kind of battery is easy to catch fire or even explode.

　　Therefore, if you want to use lithium in the battery, you must control it, and this year’s Nobel Prize winner in chemistry’s achievement actually lies in this.

　　In other words, if these three scientists didn’t make Li obedient, we would be carrying an explosive bag every day and risking being ignited at any time by calling the Internet.

　　So, how did they tame lithium?

　　Originally, Goodenough and others found that manganese spinel is an excellent cathode material with low price, stability and excellent electrical and lithium conductivity. Its decomposition temperature is high, and its oxidation is much lower than that of lithium metal. Even if there is short circuit and overcharge, the danger of combustion and explosion can be avoided.

　　Now, let’s imagine lithium cobaltate, and imagine it as a sandwich made of cobalt and oxygen. The lithium atom is the ham slice in the middle, which can be easily pulled out, so that the lithium atom can move quickly in the lithium cobaltate crystal — — Therefore, lithium cobaltate can replace metallic lithium as a lithium ion provider in the battery.

　　At the same time, this oxide can also increase the voltage of the battery and the amount of electricity stored in the battery. More importantly, it is like putting a spell on lithium, making it docile and controllable.

　　Liberal arts cross science and physics cross chemistry.

　　Hard core life of 97-year-old father

　　After briefly talking about the principle of lithium batteries, let’s talk about these three award-winning legends.

　　At the age of 97, Goodenough is the oldest Nobel Prize winner so far.

　　The old man’s life is quite hard — — After Goodenough was admitted to Yale University, he actually chose classical literature and philosophy as his first major. In order to get credit, he took two chemistry courses. When he graduated, his degree turned out to be a bachelor of mathematics. Because a math professor saw his talent, he was persuaded from a liberal arts student to a science student studying mathematics.

　　Then, World War II broke out, and Goodenough joined the US Air Force. After retiring, at the age of 30, he went to the University of Chicago to study physics, and studied solid-state physics. After graduation, he went to Lincoln Laboratory of MIT and made contributions to the development of random access memory. This technology is the later computer memory.

　　This wave of cross-border is not over yet — — In Lincoln Lab, Goodenough studied sodium-sulfur batteries. But it was not until 1976, at the age of 54, that he entered the Department of Chemistry of Oxford University in England, and his research field shifted to batteries, and he studied lithium cobaltate.

　　That is, when Goodenough went to Oxford University, England, Whitingham, the founder of rechargeable lithium-ion battery, and his team had made the world’s first rechargeable lithium-ion battery — — They creatively used titanium sulfide as the cathode material and lithium metal as the cathode material. When charging, lithium ions move from the positive electrode to the negative electrode, and the discharge returns to the positive electrode, and so on.

　　In 1977, the two high-energy scientists also co-published a book in the field of solid-state energy chemistry.

　　On the other side of the globe, some Japanese companies, especially Sony, had made great progress in the commercialization of lithium rechargeable batteries and held a large number of patents.

　　Akira Yoshino, after graduating from the Petrochemical Department of the Faculty of Engineering of Kyoto University with a master’s degree in engineering, directly entered Asahi Kasei Industrial Co., Ltd. In 1981, the research and development of lithium batteries began.

　　He plays the role of matchmaker — — After establishing the basic framework of lithium-ion batteries, Yoshino made use of graphite, which has been invented by Sony Corporation of Japan and is used as the negative electrode of lithium batteries, with stable structure and low price, to draw a red line for lithium cobaltate as the positive electrode.

　　In 1983, Yoshino made the world’s first rechargeable lithium-ion battery prototype by using lithium cobaltate cathode and polyacetylene anode. In 1985, many technical problems were overcome, metal lithium was completely eliminated, and the basic concept of rechargeable lithium-containing alkaline lithium-ion battery was established, and modern lithium-ion battery was born. In 1991, Sony released the first commercial lithium-ion battery in human history.

　　"I’m only in my 90 s and I still have time."

　　Three scientists are still working at an advanced age.

　　Although the principle of the battery looks simple, the design and manufacturing process of the battery is very complicated. Until now, some alkaline batteries invented in the 19th century are still in use. It can be seen how difficult it is to invent and improve a new battery.

　　This award is well deserved.

　　In the "Nobel Prize" field, Goodenough is somewhat known as "Haruki Murakami" in the chemical field — — The voice is very high, "running with you" for many years.

　　It is understood that 97-year-old Goodenough is still engaged in energy research.

　　"I want to solve this problem before I die. I am only in my 90 s and I still have time." Goodenough hopes to develop solid-state batteries with high energy density and high safety, so that electric vehicles can replace high-capacity batteries of gasoline vehicles. He likes his metaphor of "crawling tortoise". "This kind of crawling throughout your life may bring benefits, especially if you cross different fields and collect all kinds of clues all the way. You have to have a lot of experience to integrate different ideas. "

　　Whitingham, 78, is still thinking and working. He has also co-written books to observe and analyze the history, evolution and future state of energy storage, which describes the future development of lithium batteries.

　　Just after being told that he won the Nobel Prize in Chemistry, 71-year-old Akira Yoshino replied in an interview with the media: "Curiosity" is the biggest driving force. Prior to this, Akira Yoshino said that battery technology is a complex and difficult interdisciplinary field, and its development needs many experts. Lithium-ion batteries are the result of collective wisdom.

See you every year at the World Swimming Championships, this time in Doha.

　　Xinhua News Agency, Doha, February 1 ST (Reporter Liu Yang, Zhou Xin, Sun Zhe) Just half a year after the Fukuoka Swimming World Championships, the Doha Swimming World Championships will be held soon. From February 2 nd to 18 th, Doha, located in the tropical desert climate, will hold the World Swimming Championships for the first time to welcome the "carnival" of water sports.

See you every year at the World Swimming Championships, this time in Doha.

　　Poster of Doha Swimming World Championships.

　　The World Swimming Championships was once held every four years, but it has been changed to biennial in the past 20 years, and it has become "annual" since 2021. Affected by the epidemic, the Fukuoka World Championships in 2021 was postponed twice after the Tokyo Olympic Games, and was finally held in July 2023. Budapest filled the "vacancy" in 2022. The Doha World Championships originally scheduled to be held in 2023 was "squeezed" to the beginning of 2024, making the swimming world championships held in the same year as the Olympic Games for the first time. Singapore, the host of the 2025 World Championships, was already in place, which led to the four consecutive years from 2022 to 2025.

　　There are six major events in this World Championships: diving, synchronized swimming, open water swimming, water polo, swimming and high platform diving. Among them, diving, synchronized swimming, open water swimming and water polo are all Olympic qualifying events. Only swimming events do not have this sense of urgency, because it determines the Olympic qualification based on whether the results meet the standards.

See you every year at the World Swimming Championships, this time in Doha.

　　Li Bingjie is the only Olympic champion of China swimming team in Doha. Xinhua News Agency reporter Huang Zongzhi photo

　　For swimmers, it is easy to reach the standard, so they give up the World Championships in Doha one after another and focus on the Olympic Games. The Doha swimming pool is slightly lacking in star flavor. China also hid Olympic champions Zhang Yufei, Wang Shun, Ye Shiwen and the new "Frog King" Qin Haiyang, and Li Bingjie was the only Olympic champion for China to swim in Doha. This also gives China’s young swimmers a chance to emerge: Pan Zhanle will attack the highest podium in the men’s 100m freestyle; Dong Zhihao has medal strength in the men’s 200m breaststroke; Zhang Zhanshuo, a 16-year-old teenager, will usher in the first adult international competition and participate in five individual competitions; Yu Yiting will perform a world-class performance in the women’s 200m medley.

　　Looking at foreign famous players, American Olympic champions Ledecki, Dressel, Regan Smith, lily king and others will be absent; Canadian Olympic champion McNeil and rising star McIntosh will not play; The Australian team has 18 participants, and the women’s team has almost no famous players; Romanian short-distance freestyle star Popovich is not on the list; The Japanese team only sent 12 people to participate.

See you every year at the World Swimming Championships, this time in Doha.

　　Chen Yuxi and Quan Hongchan, the main players of China diving team, all participated in the competition. Xinhua News Agency reporter Ren Pengfei photo

　　In diving events, foreign athletes need to compete for Olympic qualifications. The main force of the China diving team, which has won the full quota, will all participate. Gemini Chen Yuxi and Quan Hongchan will once again conquer the world with the "water spray disappearance"; In addition, Cao Yuan, a three-dynasty Olympic champion who returned from injury, and Xie Si-dai, a men’s 3m springboard champion who returned from Tokyo Olympic Games last year, attracted special attention. Huang Jianjie, who is under 14 years old, is the only non-world champion and the youngest player in the team.

　　In synchronized swimming, China secured a seat in Paris with the doubles and team events champions of the Hangzhou Asian Games. This time, it will participate in all 11 events of the World Championships for the first time, and Yang Shuncheng, a teenager from Beijing, will make his debut in the men’s singles competition for the first time. The new synchronized swimming rules were implemented last year. China won 3 gold medals, 1 silver and 1 bronze in Fukuoka, and will continue to meet the challenge of bidding for the Paris Olympic Games in Doha this time. Bill may, the 45-year-old godfather of American synchronized swimming, will also appear in Doha. He said that it is his greatest wish to win the qualification for the Paris Olympic Games and stand on the Olympic Games.

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Why did the year-on-year decline in lottery sales suddenly get cold in December？ Where will the future go (2)

So, the whole network is asking: Who will this lucky guy be? Is it an individual or an institution or a unit? Did you play ahead of time, or did God give him an eye?

This incident once again provoked the lottery players’ distrust of the fairness, transparency and credibility of the lottery, and various voices appeared on the Internet.

On January 8th, after a lapse of more than one month, the local Welfare Lottery Center responded that all the news would be released in official website, and the results of the investigation were awaited, and all the responses were only these words.

Why did the year-on-year decline in lottery sales suddenly get cold in December? Where will the future go?

The impact of this incident is far-reaching, and some people always think of a cross. This may be the root cause of such a serious year-on-year decline in lottery sales last December.

Where will the development of lottery go in the future?

It is estimated that many people will issue this question. In fact, the key issue is how to establish a fair and transparent lottery sales lottery mechanism.

For example, lottery tickets can be purchased through real-name registration system, so that lottery tickets can complete all the sales lottery payment processes under the sunshine supervision mechanism.

The prospect of lottery market is huge and can be continuously explored. The core is how the competent authorities really do effective supervision!