Why did the recent Ukrainian attack on the Russian Black Sea Fleet succeed frequently? The increasing battle damage of the Russian Black Sea Fleet will have an impact on the situation in Russia and Ukraine?

Intended to cut off Russian supplies

Data map: Russian Black Sea Fleet (Source: CCTV pays attention today)

The Ukrainian side said on March 24th that the Ukrainian Defence Forces had hit the landing ships Yamal and Azov of the Russian Black Sea Fleet, a communication center and many infrastructures.

Analysis of Ukraine’s recent combat operations, military observer Zhou Weizheng believes that this is to further weaken the Russian military’s logistics supply capacity in relevant directions.

Zhou Weizheng: The Ukrainian army’s recent operational focus is to crack down on Russia’s logistics supply links, using air-to-ground cruise missiles, drones and unmanned boats to crack down on Russian refineries, thermal power plants, material and oil warehouses and other infrastructure. Landing ships, as an important supply vehicle in the south of Russia, have also become the key targets of the Ukrainian army.

If the attack did injure two Russian landing ships, as the Ukrainian army said, it would add insult to injury to the Russian Black Sea Fleet, which would further weaken the Russian military’s logistics supply capacity in the direction of Zaporoze and Hellson. If the Crimean Bridge is hit again in the next step, then Russia’s logistics supply will become a major issue affecting the trend of the situation.

It has little impact on the overall situation of Russia and Ukraine.

Data Map: The headquarters of the Russian Black Sea Fleet was attacked (Source: CCTV pays attention today)

Zhou Weizheng said that although the Russian Black Sea Fleet has been damaged in recent wars, it will not have a major impact on the overall war situation in Russia and Ukraine.

Zhou Weizheng: Judging from the current overall situation, Russia’s attacks are mainly concentrated in the direction of Donetsk and Zaporoge, and the amphibious landing operation in the sea direction has basically been abandoned.

Although the losses caused by Ukraine to the Russian Black Sea Fleet are increasing, it is difficult to have a fundamental impact on the situation in Russia and Ukraine.

How to defend against suicide unmanned boats?

Data map: Wujun unmanned boat (Source: CCTV pays attention today)

After the outbreak of the conflict between Russia and Ukraine, unmanned boats created a brand-new style of asymmetric warfare in modern naval warfare, which also made how to defend against suicide unmanned boat attacks a topic of great concern.

In this regard, Zhou Weizheng analyzed.

Zhou Weizheng: One of the important reasons why the unmanned boats of the Ukrainian army are outstanding in actual combat is that the Russian army lacks sufficient and powerful early warning aircraft and drones, and its full-time and all-round battlefield situation awareness ability is relatively weak. The attacked ships have single defense means and limited capabilities.

In the future, to deal with unmanned boats, it is necessary to improve the joint reconnaissance and search ability of land, sea and air, grasp the specific information of the unmanned boat’s release base or the mother ship it carries, and then use long-range precision firepower to attack and destroy it from the source or during the voyage. If there is a "fish escaping from the net", electronic jamming can be carried out on the unmanned boat, its communication link can be cut off, and the sensor on the boat can be blinded. At the same time, laser and high-precision near-anti-gun system can be used to intercept it.

(Yang Guangwang Military Channel Reporter: Yuan Mengting Yu Lan)

　　The middle and lower reaches of the Yangtze River and the Dongting Lake and Poyang Lake connected with them are the only homes of the Yangtze finless porpoise, an endemic species in China. In the 1990s, about 3,000 Yangtze finless porpoises lived here. With the over-exploitation and utilization of the golden waterway of the Yangtze River, the ecological environment of the Yangtze River has been increasingly damaged, and the fish resources are decreasing, which means that the homes on which the Yangtze finless porpoise depends have been destroyed and the bait resources are seriously in short supply.

　　The Yangtze River can’t hold not only the baiji, the white sturgeon and the Chinese sturgeon, but also the Yangtze finless porpoise. We can’t let the Yangtze finless porpoises sit still, we must find new homes for them, and we must find enough bait for them.

　　In 1986, the first International Symposium on the Biology and Species Protection of Freshwater Dolphins was held in Wuhan. Scientists in China took the lead in putting forward three measures to protect Yangtze finless porpoises, one of the most important measures is to immediately carry out ex situ conservation of Yangtze finless porpoises, that is, to move some Yangtze finless porpoises out of the Yangtze River to safer natural waters than the Yangtze River, and to implement species conservation and protection. When the environment of the Yangtze River becomes better in the future, the descendants of these Yangtze finless porpoises will be moved back to the Yangtze River, so that the Yangtze finless porpoises can stay in the Yangtze River forever.

　　After a long period of exploration, failure and persistence, scientists established the ex-situ conservation theory of Yangtze finless porpoise, and formed a complete ex-situ conservation technology system, including the site selection of provenance and ex-situ waters, population health and genetic management, and the technology of restoring the natural population of the Yangtze River.

　　After years of investigation and demonstration, it is determined that the old road of Swan Island in Hubei Province is suitable for ex-situ conservation of finless porpoises. In 1990, the first batch of five Yangtze finless porpoises moved from the main stream of the Yangtze River to Swan Island. The results of subsequent monitoring and research show that they are completely adapted to the old course of Swan Island and can reproduce naturally. In 1992, Hubei Yangtze River Swan Island Baiji Dolphin National Nature Reserve was successfully established.

　　By 2021, there will be about 100 Yangtze finless porpoises in the ex-situ nature reserve, and new ex-situ nature reserves of Yangtze finless porpoises will be built in Hubei, Hunan and Anhui, led by Hubei Swan Island Baiju National Nature Reserve. At the same time, Hubei Yangtze River Swan Island Baiji Dolphin National Nature Reserve has also exported six Yangtze finless porpoises to these newly-built ex situ nature reserves.

　　As an important technical support for ex situ nature conservation, the Yangtze finless porpoise breeding and protection in artificial environment has also achieved a series of successes. So far, five Yangtze finless porpoises have been successfully bred in Wuhan Baiju Dolphin Museum and Tianezhou artificial cage, and the second generation of breeding has also been successful.

　　Ex situ nature conservation is not the ultimate goal of Yangtze finless porpoise protection, but the ultimate vision of ex situ nature conservation is the restoration and restoration of natural habitat, the return of wild species to nature and the rejuvenation of natural populations. At present, the Yangtze River Conservation is rapidly restoring the natural habitat of the Yangtze finless porpoise, and the 10-year ban on fishing has provided a golden opportunity for the restoration of food and resources of the Yangtze finless porpoise.

　　The Institute of Hydrobiology, Chinese Academy of Sciences, Hubei Yangtze River Swan Island Baiji Dolphin National Nature Reserve, Hubei Xinluo Section Nature Reserve and other units are working together to carry out the experiment of wild Yangtze finless porpoise and its gradual return to natural waters. The ex-situ nature conservation has been successful, avoiding the risk of extinction of Yangtze finless porpoise species and laying a solid foundation for the Yangtze finless porpoise’s return to the Yangtze River and the two lakes. China scientists’ original contribution condensed into "China experience", which was widely recognized by international academic circles, and was called "demonstration" for the successful protection of small cetaceans.

The industry and commerce department reminds consumers to pay attention to the following points when purchasing automobile coolant:

First, the brand of coolant is generally its freezing point value. When purchasing, the coolant with freezing point value about 10℃ lower than the lowest temperature in the region should be selected in combination with the use region and season. For example, in the south of the Yangtze River, the coolant of-25 can be used, and in the north, northeast and northwest of the Yangtze River, the coolant of-35 to-50 should be used.

Second, it is recommended that coolant should not be mixed. Different manufacturers and brands of coolant may have chemical reactions after mixing, which may easily lead to the failure of anti-scaling and anti-corrosion functions.

Third, some antifreeze solutions are concentrated solutions, which must be diluted with water to achieve the best antifreeze effect. For diluted water, it is recommended to use deionized water or distilled water, and purified water or cooled boiled water can also be used for emergency. However, tap water, groundwater or surface water should not be used, otherwise, it is easy to produce scale and corrode the cooling system.

4. The nitrite preservative added in ethylene glycol antifreeze is carcinogenic. Do not inhale it. After skin contact, it should be cleaned with water immediately.

　　August 30th, the grand opening of the Chengdu Auto Show, the auto show of the car companies have brought their own knock-out products, and the first day of the debut of the new car there are 11 models, including Avita 07, JK 7X such as new power products have received a lot of attention, although there are many new cars, but there is no pure fuel vehicles, basically with batteries and motors, and the vast majority are SUV models, and four of them have extended range models, which may be the future market trend and consumer choice.

　　Avita 07

　　Avita 07 is an SUV model officially released by Avita Technology at the 2024 Chengdu Auto Show. The 07 will also provide an extended range version and a pure electric version. The extended range version uses Avita’s new Kunlun extended range technology and is equipped with a power system composed of a 1.5T range extender and a motor. Two-wheel drive and four-wheel drive versions are available.

　　Avita 07 also continues the 100% original design aesthetic of the Avita series, inheriting the family design DNA and applying the AVATR design concept 2.0. With a closed grille, the iconic double-layer LED daytime running lights are highly recognizable. The side is a dynamic crossover design style, with smooth and muscular lines, equipped with hidden door handles and electronic exterior mirrors. The roof is equipped with Huawei’s new generation of lidar.

　　In addition, Avita has previously invested in Huawei, invited Huawei’s "second princess" Yao Anna as the experience officer, etc. With Huawei’s support, the intelligent driving will also perform well. The car comes standard with lidar, equipped with Huawei’s high-end intelligent driving system, parking and driving, upgraded city NCA intelligent driving pilot assistance, and the new omnidirectional anti-collision system CAS 3.0 are expected to appear in this new car.

　　Extreme Krypton 7X

　　Extreme Krypton 7X adopts a family-style design language, and the overall shape is fashionable and atmospheric. In the front part, the new car is equipped with an integrated smart light screen, which perfectly integrates light strips, daytime running lights, and headlights to form a horizontal line that runs through and improves the visual width. However, in terms of design, the recognition with Avita at a glance is still slightly lacking. It will also be equipped with a high-end smart driving system, equipped with a watchtower-type lidar, and will also use a waterless design and borderless rearview mirrors. There are also 64 LED lamp beads on both sides of the body, which play the role of interactive lights when assisting driving. In the previous smart driving tests, Huawei has a slight advantage. In the follow-up test media will also conduct smart driving tests on the two cars. We will wait and see.

　　The 2024 Chengdu Auto Show is undoubtedly a technological and aesthetic feast in the field of new energy vehicles. The two cars have made their debut at this Chengdu Auto Show, and Avita 07 has five advantages: aesthetic ceiling, luxury ceiling, smart driving ceiling, chassis ceiling, and range-extended ceiling. It occupies the commanding heights of the value of new energy intermediate luxury SUVs. According to the plan, Avita 07 pure electric and range-extended dual cars will be officially launched in September to meet the diverse and all-scene vehicle needs of users.

On April 7th, Jackie Chan’s 70th birthday, I wrote with emotion: "April 7th has not yet arrived, and many friends are already reminding me, big brother, it will be your 70th birthday soon! Every time I hear this number, I am still surprised for a second, am I already seventy years old?", "It is a lucky thing to be old. Especially those of us who make action movies know how rare this luck is." And sent out many precious old photos.

The full text is as follows:

My dearest movie fans around the world:

April 7th has not yet arrived, and many friends are already reminding me, big brother, it will be your 70th birthday soon!

Every time I hear this number, I am still surprised for a second, am I already seventy years old? After being surprised, my second thought is what my eldest brother Hung Jinbao said: It is a lucky thing to be old. Especially those of us who make action movies know how rare this luck is.

Some time ago, many friends saw the photos on the Internet and came to care about my physical condition. I would like to reassure everyone that this is the movie I am currently shooting, and it requires the look of white hair and white beard. Over the years, as long as the plot requires it, whether it is a thrilling action scene or a different look, I am willing to try it. Sixty-two years into the industry, I am still making movies today, which is worth cherishing.

Recently, when my colleagues were organizing the company’s database, they dug out a lot of previous photos, and they selected some for me to accompany this Weibo. Looking at these photos, I have a lot of emotions in my heart. If I want to combine these emotions into one sentence: I love movies, I love you.

Once again, thank you all for your birthday wishes. I hope everyone is healthy and happy!

Those who have been to the wilderness, the forest sea, and the isolated island must never forget the glance they took when they looked up at night. A milky white ribbon cut across the boundless darkness, and the stars shone with silver light hundreds of millions of years ago. Every star is a star like the sun, and human beings realize their insignificance, loneliness, and greatness at this moment.

But such sights are often only seen in areas with minimal light pollution. In cities, not to mention the Milky Way, even the brightest star, Sirius, has a hard time passing through artificial light curtains. In May, the northern hemisphere’s Galactic season has arrived, and stargazers are planning to take a long vacation to travel to Xinjiang, Tibet, and Inner Mongolia to see the Milky Way. But you would never have imagined that you can actually see the magnificent Milky Way without running so far, or even leaving Shanghai.

Nanhuizui Sea View Park in the new area of Lingang is such a magical place. At night, looking at the East China Sea from here, you can only hear the waves crashing on the shore, and you can’t see your fingers – such a place with very little light pollution is the perfect place to watch the stars and the Milky Way.

Taken in Nanhuizui Guanhai Park, the Milky Way is visible to the naked eye in the sky. Hu Xingyang, photo

From another angle, look at the sky full of stars. Hu Xingyang, photo

It’s rare to see a star, and some people may be seeing the Milky Way for the first time. Why not take a picture and leave a souvenir?

What, can’t shoot? Don’t panic, the tutorial is here. I will teach you hand in hand, so that you can turn into a master of Hoshino photography, and the galaxy photos taken with your mobile phone can immediately detonate your Moments.

Step 1: Find the Milky Way

The short holiday is 5 days, which is from the ninth to the twelfth day of the lunar calendar. The moon phase is the first quarter moon, and the brightness is higher. The moon is bright and the stars are thin, and when the moon is hanging high, the stars are naturally dim.

However, the moon always sets when it rises. At 2 am, the moon basically falls below the horizon, which no longer affects stargazing and shooting. At this time, the center of the galaxy has risen to a height of 50 ° from the ground, which is suitable for observation and shooting.

The location of the Milky Way can be identified by the naked eye; it can also be located by the astrology APP. Generally speaking, if you look east, you can find it.

Step2: Shooting!

Why did you start shooting? Don’t worry, shooting stars is that simple. Set up the tripod, fix the camera or mobile phone, and then adjust the parameters – exposure time is 20 seconds, aperture F2.8, sensitivity ISO2000, focus is set to manual, pull to infinity, and recycle some more.

If the maximum aperture of your lens is less than 2.8, you can increase the sensitivity accordingly. The stars are in constant motion relative to the ground, so the shutter time cannot be increased, otherwise it will be trailed.

The mobile phone uses professional mode, and the parameters are the same as above. Some mobile phones come with star mode, so you can rest assured to leave it to smart shooting.

Have you learned it? "May Day" holiday, come to Lingang and try it!

Welcome to car home Nanyang Special Promotion Channel to bring you the latest special information. In the current promotion activities, high-profile models are giving back to consumers with attractive price strategies. In Nanyang area, we are honored to announce that Xingyue L Zhiqing is carrying out a vigorous preferential activity, which can enjoy a cash discount of up to RMB 7,000. The starting price has dropped to 152,700 yuan, which is an opportunity not to be missed. For more detailed information and win this great discount, just click the "Check Car Price" button in the quotation form below, and let the professional consultant answer your questions and help you realize your dream of buying a car.

As a brand-new car, Xingyue L Zhiqing has an eye-catching design. Its front face adopts exquisite family-style design, and the streamlined air intake grille with chrome trim shows a strong visual impact. The overall style is stable, the lines are smooth, and the proportion of the car body is coordinated, which not only emphasizes the sense of strength, but also reveals the sense of exquisiteness and technology. No matter the details or the overall shape, Xingyue L Zhiqing is unforgettable and fully demonstrates its unique charm.

The side lines of Xingyue L Zhiqing are smooth and dynamic, with a body size of 4795mm*1895mm*1689mm and a wheelbase of 2845mm, which provides it with spacious interior space and excellent driving stability. The front and rear wheel tracks are 1610mm, equipped with 235/50 R19 tires, which not only ensures the driving grip, but also complements the rim design, showing its exquisiteness and strength.

The interior design of Xingyue L Zhiqing is dominated by exquisiteness and sense of technology, creating a warm and luxurious driving space. The steering wheel wrapped in high-quality leather material provides a comfortable grip, and at the same time supports manual up and down+front and rear adjustment to meet the individual needs of different drivers. The 12.3-inch high-definition central control screen stands on the instrument panel, integrating multimedia system, navigation, telephone, air conditioning and other functions, with convenient operation and clear information display.

The seat in the car is made of imitation leather, which has good touch and durability. The main driver’s seat supports front and rear adjustment, backrest adjustment, height adjustment (4-way) and lumbar support (4-way), providing extreme comfort. The driver’s seat is additionally equipped with heating and ventilation functions to ensure the best ride experience in all weather conditions. The co-pilot seat also supports front and rear adjustment and backrest adjustment, while the driver’s seat is also equipped with electric seat memory function, which is convenient for daily use.

The backrest of the second row of seats can be adjusted to meet the comfort needs of passengers. The seat layout of Xingyue L Zhiqing is flexible, and the rear seats support the proportion of falling down, which provides greater space possibilities for loading items or passengers. These configurations work together to create the practicality and convenience of the interior of Xingyue L Zhiqing, providing drivers and passengers with a comfortable and technological in-car experience.

Xingyue L Zhiqing is equipped with a 1.5T turbocharged engine with a maximum power of 120kW and a maximum torque of 255nm, providing a power output of 163 HP. The matching is a 3-speed DHT transmission, which makes the vehicle take into account the fuel economy and ensure the dynamic response during driving.

To sum up the evaluation of car home car owners on the Star Yue L Zhiqing, she was full of praise for the appearance design of the vehicle, especially the innovative design of color matching and the protruding middle net, which made her feel younger and more textured. This design concept has obviously won her love, and also makes us believe that Xingyue L Zhiqing has brought unique visual enjoyment to car owners in appearance.

　　Recently, Autonavi Maps announced the official release of the "Autonavi Talent" program, which aims to create a new product model, allowing more users to conveniently participate in "building maps", improve Autonavi map products, and help others’ daily travel and life.

　　"Every annotation, every comment, every upload is the best practice of the’me for everyone, everyone for me ‘philosophy." Liu Zhenfei, president of Autonavi Maps, said that Autonavi Maps’ mission to "connect the real world and make a living map" is inseparable from the contributions and support of Autonavi experts.

　　It is understood that before this official release, the "Autonavi Talent" program has been in practice running for a year. The opportunity for the launch of the project is that there has been a group of enthusiastic users on the Autonavi map for a long time. In the process of daily use, they actively verify and report the real point information to help the Autonavi map become more and more perfect. In order to make these "experts" and more potential enthusiastic users known to the outside world, and obtain corresponding spiritual motivation and recognition, the "Autonavi Talent" has established an internal project.

　　The essence of "Autonavi Talent" is a complete digital growth system based on Autonavi Maps, which includes various parts of the map business that are suitable for users to actively participate in, such as reporting locations, revising locations, reviewing stores, etc. Users can complete such tasks during their daily travels to participate in "building maps".

　　On the other hand, Autonavi will give the corresponding growth value and level according to the contribution of customer engagement, so that the experts who have silently contributed to other users have the identity authentication that matches their contribution, so that they realize that every time they report, correct and comment, they can give positive feedback to a large number of Autonavi map users and receive corresponding incentives.

　　It is reported that each user can check their talent level and specific contributions by opening the Autonavi map APP, clicking the "My" tab below, and clicking on their personal homepage.

　　Now, after a year of practice running, "Autonavi Daren" has gained the recognition of a large number of users and actively participated in the program, including travel experts, map product enthusiasts, or any enthusiastic citizens who make Autonavi maps better; and "Autonavi Daren" has also tried to launch more special services to help users participate in more diverse ways, such as during the "Life Exploration Program" jointly launched with "China National Geographic", which can recommend "real walk certification" boutique must-drive routes.

　　"Autonavi has always been centered on user requests, and the same is true for’Autonavi experts’." Liu Zhenfei said that after the official release of the "Autonavi experts" plan, the future will be through continuous technology and model innovation to connect more corners of the world, build more bridges, and help more "peers" reach their destinations unhindered. "I hope that in the future’Autonavi experts’ can become a way of life for everyone." (Zhang Jing)

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    International Online auto channel News: Recently, the speculation about the price of BYD Han EV is very hot, and there are also price estimates ranging from 250,000 to 400,000 yuan in the industry, and consumers generally believe that the price of BYD Han EV is beyond the expected level. Before discussing the price, consumers can be said to be eagerly looking forward to BYD Han EV, admiring its international design level and expecting brand-new technology to expand its territory in the new energy market. From this perspective, it is a pity to be "persuaded" by the price.

   

Byd Han EV

    The contradiction between the continuous optimization of brand value system and consumers’ inner desire for "cheap" independent brands is vividly reflected in BYD Han EV, which can actually be regarded as consumers’ recognition of products to a certain extent. Further thinking, if BYD Han EV establishes a brand-new product image in the hearts of consumers by virtue of its product strength, is it the value that Han EV really pursues?

   "High-level" quality directly points to the pain point of consumption

    First of all, BYD Han EV is a product that integrates almost all the superior resources of the brand. Its design level, technical level and its own product positioning occupy the commanding heights of BYD brand, and at the same time, it also shows outstanding product advantages in horizontal comparison with competing products at the same level. If we sum up the comprehensive competitiveness of BYD Han EV in one word, "high order" is undoubtedly a suitable choice.

   

Byd Han EV drag coefficient

    The design of BYD Han EV has been made public for a long time, so I won’t repeat it too much. The skills of international first-line designers are almost unified in aesthetics, and the drag coefficient of 0.233cd is at the leading level in the industry. The simple interior exudes a strong charm of science and technology, which can be called a template for the design of new energy electric vehicles. The newly upgraded DiLink 3.0 is equipped with DiPilot unmanned auxiliary system for the first time. Recently, BYD executives also revealed in Weibo that they have in-depth technical cooperation with Huawei. The human-computer interaction technology of BYD Han EV is also worth looking forward to.

   

Byd EV blade battery

    The use of blade battery makes BYD Han EV hold the key to open the future door of new energy field. As the first mass-produced vehicle equipped with blade battery, BYD Han EV’s NEDC cruising range is 605 kilometers, and its endurance may not be described as outstanding at present, but the advantages of blade battery in safety and service life make Han EV have the advantage that competing products are difficult to target. Blade battery fundamentally eliminates the possibility of "spontaneous combustion", and can be charged and discharged more than 3000 times, with the longest driving mileage exceeding 1.2 million kilometers. At the same time, the 0-100km/h acceleration ability of 3.9 seconds cannot be ignored. The outstanding performance of BYD Han EV power makes it have a variety of experience ports, which can meet the car needs of different users in a wider range.

   

Byd Han EV LOGO

    When "first time", "brand-new", "unmanned driving" and "long service life" become the key words of BYD Han EV, its product advantages have jumped to the fore. BYD Han EV is in the buyer’s market because of the product value transmitted by brand-new technology. Han EV can be said to be a product specifically aimed at the weakness of consumers in new energy electric vehicle products.

   Price "to the left" and value "to the right"

    Will the price of BYD Han EV reach the height that consumers are "unacceptable" for a while? Maybe it will. At present, the price range of Qin PRO EV with the highest positioning and the most expensive price of BYD’s new energy car is 149,900-204,900 yuan, and the Han EV with a higher positioning level should not have too much intersection with Qin PRO EV. Tang EV, a new energy /SUV model, is the flagship of BYD’s new energy products. The price range of 304,900-384,900 yuan has caused many consumers to "stay at a respectful distance from others" and its sales volume is not as good as that of the models with slightly lower brand positioning. In view of the many new technologies carried by Han EV, it is not easy to control the price within the range of Tang EV. Beyond the price range of Tang EV, it is undoubtedly touching the "bottom line" of consumers’ prices, which is the same as that of Tang EV and new energy cars/SUVs.

Byd Han EV steering wheel

    For the market, BYD Han EV has better brand value and technology accumulation than Tucki P7, which is located close to the market. In the field of new energy vehicles, in the face of the 300,000-yuan unavoidable rival Tesla Model 3, BYD Han EV is also very likely to sell at a higher price than Model 3, especially in the state that the price of Model 3 has been repeatedly lowered due to policy adjustment. BYD Han EV with a higher product positioning will bring consumers a very difficult multiple-choice question. Whether it is the positioning of the product itself or the high cost load that is inevitable when new technologies are used in advance, BYD Han EV is hardly a product that will be "really fragrant" at first glance, but at least it is definitely a "penny for money" product. After all, the first mass production of new technologies requires certain cost digestion.

Byd Han EV interior design

    Since the range of pricing is generally delineated, another question follows. Does BYD Han EV furniture have the "value" of supporting high prices? From a technical point of view, BYD Han EV is not afraid of any rivals. Under the premise of technical confidence, Han EV’s "high price" is emboldened. With the development and progress of independent brands, after completing the original accumulation, brand upward has become a new goal pursued by mature independent brands, and consumers’ acceptance and recognition of independent brand products with gradually higher positioning and slowly rising prices are also improving simultaneously. From the market environment, BYD Han EV will not fall into the situation of "reversing consumers’ cognition by itself", but obviously it will not be easy to achieve its goal.

Byd Han EV air conditioning air outlet and sound

    In a word, the pricing of BYD Han EV may become one of the key factors to determine the sales volume, but with the mass production and subsequent gradual decentralization of new technologies, Han EV will provide a strong boost for BYD to achieve brand promotion in the new energy field and become one of the "anchor" products of the brand in the new energy field. (Source: Official Photo courtesy of: Huang Yi)

　

　　Baiwan mobile phone without a word?

　　This is not a joke, but a well-known manufacturer’s "black technology" shown to visitors at his own technology conference — — Flexible screen equipment still in the prototype stage.

　　One of them is a foldable and deformable mobile phone, which is a 7-inch tablet computer when surfing the Internet, watching dramas and sending and receiving emails. When you want to make a phone call, just fold it in half and it will become a smart phone of about 5 inches. The other is a flexible bracelet-like device, which unfolds into a 4-inch straight mobile phone and turns into a watch in seconds after curling.

　　Flexible and foldable, this is the flexible screen favored by terminal manufacturers recently. Recently, many mobile phone manufacturers have shown smart phones with flexible screen design to the outside world, and several large display manufacturers have announced that they will realize mass production of flexible screens this year.

　　So, what is a flexible screen? Why are flexible screens sought after? What changes will it bring to people’s lives?

　　What is a flexible screen?

　　Display screen with plastic as substrate and OLED display material.

　　"Flexible screen is the abbreviation of flexible display screen, which is an innovative breakthrough realized with the change of display technology, mainly the development of OLED technology." Wang Dawei, vice president of BOE Technology Group and head of the flexible technology team, told the reporter that traditional display screens all use glass as the substrate material, and then add various functional layers or components such as triode array, liquid crystal or luminescent layer on this substrate material; Flexible screen is a display screen made of plastic as substrate material and various functional layers or components.

　　"Glass is difficult to bend and fold, while plastic can bend at will, so flexibility is opposite to rigidity, mainly because the substrate material is different." Wang Dawei said that he showed the reporter samples of BOE’s flexible screen — — Plastic film with a size of about 5.5 inches and a thickness of about 1 mm. The reporter weighed it gently. In addition to being light and thin, it is no different from ordinary film in appearance, and it is easy to fold and bend. But after connecting the circuit signal, this film instantly lights up like a mobile phone screen.

　　According to reports, at present, most of the commonly used computers, color TVs and mobile phone displays use liquid crystal display technology (LCD), and the LCD itself cannot emit light, so complicated components such as backlight, polarizer and color filter film are needed, and the thickness of the screen is difficult to reduce.

　　Wang Dawei made an analogy. The common LCD screen is like a sandwich with two pieces of glass sandwiched between them. The liquid crystal can adjust its brightness, but it needs a light-emitting component to provide backlight, so as to realize color display.

　　Different from liquid crystal display technology, OLED display technology realizes the self-luminescence of display materials. In BOE’s laboratory, the reporter saw these new display materials — — White powdery solid placed in bottles and jars. "These are luminescent materials, and different arrangements and combinations will emit different lights such as red, yellow and blue." Wang Dawei introduced that each of these powders is more expensive than gold, and the most expensive is 10,000 yuan a gram. Because of the self-luminescence, the display screen made of OLED technology no longer needs backlight, color filter and other components, and these display materials are very thin, and OLED display screen is much thinner than LCD display screen.

　　"LCD displays need two glass substrates, and OLED displays only need one substrate material as the bottom layer. The display material evaporated on the substrate can make the screen glow. Changing this substrate material from glass to plastic film becomes a flexible screen that can be bent and folded. " Wang Dawei further explained that OLED technology can be applied to both plastic substrates and glass substrates; While LCD can only be applied to glass substrates.

　　What changes will the flexible screen bring?

　　In the future, the screen will change at will, "display" will be everywhere, and the display screen may be embedded in clothing and jewelry.

　　So, what are the characteristics of the flexible screen besides being bendable?

　　According to experts, the flexible screen using OLED technology is not only thinner in size, but also lower in power consumption than the original device, which helps to improve the endurance of the equipment. At the same time, the contrast is higher, and it has better performance in color brightness and clarity. The flexible screen can also be stretched by external force to achieve the effect of curling and stretching, so that the size can be switched at will without affecting the display clarity. In addition, due to the use of plastic substrate, the durability of flexible screen is higher than that of previous screens, which can reduce the probability of accidental damage to equipment.

　　Therefore, as soon as the concept of flexible screen was introduced, it was enthusiastically sought after by the market.

　　The flexible and foldable screen, coupled with low energy consumption, gives terminal manufacturers a huge imagination space and will also bring all kinds of brand-new changes to people’s lives. This is not only reflected in the field of mobile phones, but also in home TVs, notebook computers, car monitors, wearable devices and so on.

　　In the future, our computers may be thinner and more portable. At present, some scientific and technological enterprises have demonstrated new computers based on flexible screens. This computer screen can be automatically rolled up with one button, and it is as easy to carry around as a pen. Coupled with a soft, lightweight, flexible and ultra-thin transparent keyboard that weighs only a few grams, the reporter wants to abandon his laptop that weighs one kilogram in minutes.

　　Our car space may be more spacious in the future. Because the flexible display screen can better fit the complex space inside the car, the central control area of the car does not have any redundant physical buttons, but integrates the interactive design of display, buttons and so on. Imagine that when the heavy center console in the car becomes thinner, people’s space in the car will inevitably increase a lot.

　　Our home life may be more intelligent in the future. The flexible screen makes "display" everywhere. When the screen is attached to the water cup, the networked display will report your health data every day when you drink water. When the screen is attached to the refrigerator, without opening the refrigerator door, the display screen will tell you what to cook today … … The size of the big color TV on the wall should be larger. When you don’t want to see it, you only need to press a button, and this color TV that occupies the whole wall will be rolled into a painting axis. In some manufacturers’ designs, flexible display screens can even be embedded in clothes, backpacks and jewelry.

　　In addition, because OLED can emit light by itself and consume less energy, in the future, our smart products such as mobile phones and computers may be able to be recharged for several days.

　　Of course, the industry expects that the application of flexible screens in real life will still start with small and medium-sized screens. Smartphones and wearable devices with flexible screens will appear in people’s field of vision earlier. In fact, among the smart phones released by Samsung, Huawei and other mobile phone manufacturers last year, some screens have realized hyperboloid bending, that is, small bending at the edge, which can be regarded as a prelude to flexible screen smart phones.

　　When can I see the flexible screen?

　　Existing enterprises can mass-produce, and will see the first flexible screen mobile phone this year.

　　So, what is the research and development status of flexible screen?

　　According to experts, since the display industry is mainly concentrated in East Asia, China, Japan and South Korea have the strongest technical strength in research and development. Flexible screen technology is the leading enterprise in the world, such as Samsung and LG. Samsung has been involved in the field of flexible screens earlier, and has a strong technical research and development force. At present, it has achieved mass production of small and medium-sized flexible displays. The United States, Japan and other countries focus on the upstream of display technology — — Research and development of new materials and equipment.

　　According to reports, the research and development of flexible screen is closely related to the development of OLED technology. OLED devices were first realized in the laboratory by Chinese-American professor Deng Qingyun, and the R&D boom started in 1980s. However, due to the complex process and low yield, researchers from all over the world have worked hard for more than 20 years to solve the technical bottleneck in recent years, making OLED realize industrial production.

　　Only display materials are not enough, and the research and development of flexible screen needs to break through the important processes of flexible display technology, such as flexible substrate production, OLED luminescent layer preparation, film packaging and peeling. After that, it will take at least one or two years to complete the detailed integration of various processes.

　　"From glass substrates to plastic substrates, all the processes involved must be redesigned and the materials used must be re-selected." Wang Dawei gave a simple example. Glass and plastic bear different temperatures, so the corresponding design should be changed. As far as the research and development of flexible screen itself is concerned, more than 100 new materials and equipment are needed.

　　It is not easy to get every new material. "At present, the traditional conductive materials used to realize the touch function of the mobile phone screen can not be bent with a small radius of curvature, and it is extremely easy to break. The conductive material based on nano-silver technology can be bent for tens of thousands of times without breaking, and the conductive performance has hardly changed, which is very suitable for touch application of flexible display products. " Cao Yu, head of C3NANO’s business in China, told reporters that the conductive material of nano-silver wire they promoted in China was successfully developed in the laboratory by Bao Zhenan, an academician of the American Academy of Engineering and a professor at Stanford University in 2010, but it took five or six years of experiments and improvement to achieve stable mass production.

　　Domestic flexible screen research and development has also made substantial breakthroughs. As a representative enterprise, BOE invested 46.5 billion yuan to build two sixth-generation flexible AMOLED production lines in Chengdu and Mianyang respectively, and the Chengdu production line is expected to achieve mass production this year. Other companies, such as Visionox, Tianma, Rouyu and Hehui Optoelectronics, also performed well.

　　According to foreign media reports, Samsung and LG are likely to launch flexible screen mobile phones first this year, and manufacturers such as Apple are also expected to release similar products in 2018. Just a few days ago, the US Patent and Trademark Office passed an Apple patent called "Flexible Input-Output Electronic Device", which showed a flexible LCD or OLED display mobile device.

　　For ordinary consumers, this year is worth looking forward to.

　　Extended reading

　　Display technology development trend

　　With the development of economy and society and the arrival of the era of mobile internet, it can be said that "display" is everywhere. The product theme of display technology has also evolved from CRT TV to liquid crystal (LCD) and then to OLED technology, and major manufacturers have set OLED as the future growth driving force.

　　What is CRT? It is the earliest TV imaging technology in China. The first black-and-white TV set and the first color TV set in China adopted this technology. At present, most thick TV sets are still using CRT technology. The structure of CRT TV is a vacuum tube with one or more electron guns in it. The electron guns emit electron beams. When the electron beams hit the inner side of the front screen surface of the vacuum tube, the luminescent paint on the inner side of the screen is hit by the electron beams and emits light to produce images.

　　The full name of LCD is liquid crystal display screen. Its structure is that liquid crystals are placed between two parallel pieces of glass, and there are controllable semiconductor devices on the two pieces of glass. The liquid crystal molecules are controlled to change direction by electrifying or not, and the light emitted by the backlight is refracted to produce pictures.

　　OLED is regarded as the future of display technology, which has the advantages of self-luminescence, low energy consumption, ultra-thin, flexible and curly, high color gamut and fast response. According to experts, after nearly 30 years of exploration, accumulation and layout, the advantages of OLED display technology in terms of resolution and mass production have begun to appear.

　　In the past, the large-scale standard panel production mode was increasingly difficult to meet the different needs of different users. People rely more and more on the internet, and this model requires the screen to appear in more places. Emerging vehicle monitors, wearable devices and e-sports all put forward different requirements for display enterprises.

　　According to industry analysts, East Asia has become the center of global display technology. At present, the scale of China’s display industry is soaring, making it the fastest developing country. China’s display industry has not only increased its market share, but also gradually narrowed its technological gap. In some areas, it has even achieved catch-up, and the upstream and downstream industrial chains of the display industry have gradually been established.

　　(Feng Hua finishing)