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On February 27, the famous Hong Kong movie star Wu Mengda passed away at the age of 70 due to ineffective treatment for liver cancer.

On March 1, "Bay Area Filmmakers Talk About Patriotism – Mr. Wu Mengda’s Work Seminar and Memorial" was held in Guangzhou, and people from the entertainment industry in the Guangdong, Hong Kong and Macao Greater Bay Area jointly missed "Uncle Da". It is planned that the funeral will be held in the underground salute hall of Hung Hom World Funeral Home on March 7, and the funeral will be held with a Christian ceremony the next day.

Zhou Xingchi, Wu Mengda’s friend for many years, once again became the focus of public attention, and immediately responded, "I have just learned this news. Although I have been paying attention to Wu Mengda’s condition during this time, I will be mentally prepared, but I am still very sad and reluctant. Wu Mengda’s illness came and went quickly. He is my partner and old friend for so many years, and now I can’t accept it."

In addition, many star friends such as Andy Lau, Li Lizhi, Ren Dahua, Shi Xiaolong, Wang Jing, Zhu Yin, Zhang Min, and Wang Zuxian, who have cooperated with Wu Mengda, have sent messages to mourn, and Wu Mengda’s old owner, the TV station, has broadcast a one-hour special "The Unparalleled Performing Arts Master Will Always Miss Wu Mengda" to show his memory.

Previously, on the 22nd of this month, Tian Qiwen revealed in an interview that Wu Mengda discovered that he was suffering from liver cancer at the end of 2020 and recently completed surgery and entered the chemotherapy stage.

Since 2014, Wu Mengda has been misreported to have passed away many times. At that time, he was in the hospital for emergency treatment due to heart failure caused by a virus infection, and he once lost 15 kilograms due to illness.

In 2017, Wu Mengda, whose physical condition was already not optimistic,Insist on participating in the filming and publicity of "The Wandering Earth" with illness.At the filming scene of the film, Wu Mengda, who played Grandpa Han Ziang, had to wear a dozen catties of mecha, and the scenes of hanging pressure were even more difficult. Almost every scene required a large gulp of oxygen.

In the past 50 years, Wu Mengda has participated in nearly 300 film and television works in his life, and has starred in 10 works within the second time, with a related box office of more than 5 billionBut what is even more fresh in every audience’s memory is that Wu Mengda strives to make every effort in each work,"I dare not disappoint the audience’s expectations."

Legends rise and fall,Create the self-cultivation of an actor

　

Born in 1952 in Xiamen City, Fujian Province, Wu moved to Hong Kong with his parents at the age of 7. In 1973, Wu Mengda began to study acting at the third stage of the Hong Kong Radio Television Artist Training Course, and two years later, he officially debuted and started his acting career.

Since childhood, Wu Mengda, who dreamed of appearing on the screen one day "should be very handsome", met Zhou Yun-fat, Du Qifeng and Lin Lingdong in the artist training class. Wu Mengda, who had always been among the best at that time, officially joined the industry after graduation, and started from the dragon set according to the rules of the newcomer entertainer at that time.

In 1979, Wu Mengda gradually grew up in the grinding career of the dragon set, and with the role of "Hu Tiehua" in "The Legend of Chu Liuxiang", he gained high popularity and fame. Wu Mengda later recalled, "Even as soon as I got off the bus at the door of the hotel, there were a large number of female fans waiting for autographs."

However, Wu Mengda, who suddenly tasted the taste of fame and fortune, was once addicted to bars and casinos, drinking, playing cards and picking up girls for fun all day long, and owed 300,000 Hong Kong dollars in gambling debts the next year, becoming a "mud that cannot be supported" in the eyes of friends and colleagues, and facing a snow that has no play to accept.

At that time, Wu Mengda, who even considered suicide and career change, was determined to pay off his debts through hard work. From 1981 to 1985, he refocused on acting and constantly corrected himself. Just like the plot in "King of Comedy", Wu Mengda recounted reading Stanislavsky’s "Self-Cultivation of Actors" countless times, which provided a solid foundation and accumulated material for future performances.

The turnaround came from his old friend Johnnie To’s "Tianruoqing", in which Wu Mengda partnered with Andy Lau and played the sidekick "Taibao". Wu Mengda portrayed this gangster role at the bottom of society as "like a dog" through actions such as smoking cigarettes, hunchbacks, and details such as snobbery and flattery.This screen classic role made Wu Mengda popular in one fell swoop and won the Academy Award for Best Supporting Actor. Since then, film appointments have continued and the pay has been considerable.

And to the post-70s and post-80s who shed many tears "Ye Qingwu","Uncle Da" Wu Mengda is often linked to "Xingzai" Zhou Xingchi through the "nonsensical head" label.

In 1989, Wu Mengda and the newly debuted Zhou Xingchi first collaborated on comedies such as the TV series "Hero of the World" and "He Came from the Jianghu". The two worked together in a tacit understanding and co-created the early nonsense-style videos. It was also from then on that the two developed the habit of temporarily chatting about classic passages in front of the camera.

The off-the-beaten-path comedy was so popular that it caught the attention of the film market. In 1990, Wu Siyuan invited the two to star in "Gambling with God," a low-cost defeat of Jackie Chan and Hui Guanwen’s films, setting a Hong Kong box office record of more than 40 million Hong Kong dollars.

Since then, Wu Mengda and Zhou Xingchi have successively cooperated for 12 years, such as "Dragon and Phoenix Teahouse", "Truant Dragon", "Lu Ding Ji", "Truant Dragon 2", "King of Destruction", "Variety Star Lord", "God of Cookery", "Shaolin Football", etcMore than 20 film worksAmong them, in 2001 "Shaolin Football" broke the record again with a box office of more than 60 million Hong Kong dollars

And this film history story ended in the 2001 film "Shaolin Football".This is the last collaboration between the golden couple of nonsensical comedies.It is worth mentioning that this film has won seven Academy Awards, including Best Film, Best Director, and Best Actor, making it a swan song of the times.

The end of the legend,Farewell to the era of golden supporting roles in Hong Kong films

　

For many post-70s and post-80s who shed tears "Ye Qingwu", Wu Mengda’s death was also a reminder to some extent.With the decline of the Hong Kong film market and the aging of a generation of Hong Kong filmmakers, the greatest golden supporting role era of Hong Kong films is coming to an end.

Many of the golden supporting characters in the classic Hong Kong film "Memory Kill" are actually in the awkward situation of having no drama to shoot, and have not seen the audience on the big screen for many years.For example, Wu Mengda’s friend Tian Qiwen, who accompanied him all the time when he was seriously ill, played the corpse group performance of "Golden Bell Cover Iron Shirt" in "Shaolin Football" and "King of Comedy" in "Pain, but I am an actor"; Luo Jiaying, who is deeply bound to "only you", the Tang monk who interpreted and deconstructed the classic in "Journey to the West"; Yuan Qiongdan, who often plays the stupid and crazy old Dan, is also the exaggerated and coquettish pomegranate sister in "Tang Bohu Dot Qiuxiang" in Washington; Huang Yifei, who often shows the image of a small citizen or corrupt officials, has won the best supporting actor at the Hong Kong Film Awards and the Golden Bauhinia Award for his role as the big brother who can iron head in "Shaolin Football".

In addition to Chow’s comedies, a number of outstanding supporting villains have emerged in the vast blue ocean of Hong Kong movies with "action, comedy and gangsters" as the primary colors in their heyday. Among them, Lee Shau-kee, Ho Ka-koo, Cheng Kui-an and Huang Guangliang, who have starred in movies such as "Ancient and Dangerous Boys" and "Prison" and are called "the four villains of Hong Kong movies", are the most well-known to the audience.

In addition to Huang Guangliang, who participated in films such as "Prison Situation", "Lame Hao", "Top Ten Torture in the Qing Dynasty" and "Happy Events at Home", the other three have unfortunately passed away. "Big Silly" Cheng Kui’an, who often gave the audience a fleshy face and a fierce first impression, was good at playing villains such as the boss of the rivers and lakes, and died in 2009; Ho Jiaju, who was nominated for Best Supporting Actor at the 7th Hong Kong Film Awards for his role as "Big Mi" in "Prison", died in 2015 in a bleak evening, leaving only a few hundred Hong Kong dollars in a few bank passbooks as an inheritance; Lee Shau-kee, who played the flesh and blood and convincing "Ji Ge" in "Ancient Confused Boy", died in 2019 in the last few years of his life, without any financial income, relying solely on the help of his brothers when he was young.

In addition, Lan Jieying, who has gone from a generation of movie queens to crazy and crazy, is also very sighing. She is the sexy and charming Spring Thirteen Niang in "Journey to the West" and the Lotus Fairy in "The Right Son". But this Muse, who became famous young at the age of 20 and is famous for "beautiful Wutai Mountain", died quietly at home in November 2018 at the age of 55 after several failed relationships.

Perhaps in the eyes of many people, most supporting characters seem to be playing a certain kind of person, funny or ruthless on the screen for a lifetime. "Every character has its own unique characteristics, and there is no distinction between high and low stories." Even if you play a supporting role with a small number of roles,Wu Mengda also did not waste every frame of footage, using his own way to make the characters look as good as possible, and tried his best to show "the story behind each character".

Wu Mengda, who is happy and good at interpreting the life of a hundred flavors, turned his "acting sincerity" into every small character with their own life. These voices and images that will not fade, using time as evidence, recorded the traces of such an uncrowned "King of Comedy".

Peng Yuyan is grateful that he came across the script of "Dog Formation" when he was 40 years old, and perhaps only at this age can he be so emotionally involved in "Dog Formation". The film won the Best Film Award in the Attention Section and the "Golden Palm of the Dog" Jury Award at the 77th Cannes International Film Festival this year, and began to be released in China on June 15.

Peng Yuyan said that making the film gave him the opportunity to look at his past four decades. "We may be busy every day, but we don’t know what we are busy with. In an environment like the Gobi Desert, human beings are really insignificant, that is, a grain of sand in the Gobi Desert. What you think is important may not be so important."

"This film gave me the opportunity to explore human nature and learn more about myself."

The movie "Dogs" sets the story in a small town in the northwest. After "Bullfight", Guan Hu’s director returned to the animal theme after 15 years. In the film, Jiro, played by Peng Yuyan, is imprisoned for manslaughter and returns to his hometown after parole, but it is difficult to integrate into society. Forced to join the dog fighting team, Jiro saves a black dog due to an accidental car accident, and the fates of the two are connected. Two incompatible souls resonate in each other’s loneliest moments, redeem each other, and become inseparable life partners.

The story of Jiro and the black dog in the movie has aroused the empathy of many audiences. Although the people and dogs "don’t speak the same words," they "have the same heart." Some viewers said, "Jiro is a maverick and marginal person, just like the dogs in the movie, wild and bloody coexist." Jia Zhangke commented, "People and dogs warm each other in the desolate land of the northwest, and the vitality that bursts out is touching." The director Guan Hu also said in an interview, "The animal nature contained in the human body is particularly precious. We lost it all the way when we grew up. The blood that Jiro should have was inspired by this black dog."

"The epidemic made me want to do something different, spend more time with my family, experience a different life, and my worldview and outlook on life have changed. When I came across this very good script at this time, I felt very much when I read it, and I wanted to have a different experience. So, I have to do this thing, and there is no reason to refuse."

Jiro in "Dogs" resonated deeply with Peng Yuyan: "After returning to my hometown after ten years, Jiro’s world is different. For others, time in this world has been passing, but for Jiro, it has been lost for many years. When I read the script, I think, what has this character gone through before? I don’t have a few lines in the film, but there are many opposite scenes with dogs, which is a very attractive role for me. It gives me the opportunity to explore human nature and understand myself better at the same time."

Peng Yuyan admitted that if he had seen such a script a few years ago, he might not have felt as much as he does now. "But when I encountered this scene at the age of almost 40, I felt very resonant. Many times life is not up to me to decide. How do I make changes or find my place? The process is inevitably confused and painful. Jiro in the movie is also in this situation. He is struggling to break through himself or find his place in the world. What else can he do for this society, what can he do for his family, what can he do for himself? He is at a big crossroads and does not know what to do."

Peng Yuyan said that when he reads the script, it is easy to substitute, and if he and the character have a certain degree of fit, he will have a strong desire to create. "I think the play’Dog Formation ‘can definitely give me a lot of energy and make me transform again. And Guan Hu is also a director I admire very much. I like his works very much, and I have always hoped to have the opportunity to cooperate with him."

Dedicated the most subversive performance since the film

In "Dog Array," Peng Yuyan gave his most subversive performance since he was a photographer. He admitted that Erlang was a character he had never played before. As always, he did a lot of homework for this character.

The first is the change of appearance, "The story of" Dog Formation "mainly took place in Jiuquan and Yumen, Gansu Province in 2008, and I didn’t look like the people in that environment. During that period, I drank a lot of coffee and tea, rinsed my mouth instead of brushing my teeth, and made my teeth a little yellow and tanned, which also reduced the workload of the makeup artist. Because the ultraviolet rays there are stronger, people will have a redder and darker complexion, so I got my sun spots out, my scalp was also cracked, and I shaved a short inch, and then made my body a little stronger, but I won’t be as thin as before" Tropical Past ". Because Jiro’s character is not in an unhealthy state, he came from a place where life is very regular. The bad thing about him is that his brain has not yet adapted to the current era. He has been away from his hometown for ten years and has been out of touch with the times. During the shooting process, I feel that Jiro’s state is more and more like that dog. I like my style in "Dog Array" very much.

In order to shoot "Dog Formation", Peng Yuyan also learned motorcycle stunts, "I have filmed a lot of motorcycle scenes before, but I have never practiced stunts. This time I have to ride a motorcycle to climb stairs and fly. After all, Jiro is a champion stuntman, so I still need to practice. Flick the tail, ride the stairs, rush down and fly up, and then land. I fell quite badly in the process, and the daily training will be more exhausting."

Peng Yuyan smiled and said that it is difficult to learn motorcycle stunts, "because the old motorcycle is very heavy, and its oil should be grasped very firmly. I wear protective gear when I practice, but I don’t have it when I shoot, so it is actually very dangerous. If you don’t have professional guidance, you really don’t practice by yourself. All our motorcycle riding scenes are real shots, and I like this kind of challenge very much. Like when I shot" Emergency Rescue "before and got burned or hung on a helicopter, I just had to fight hard and survive. Because of the movies I shot before, I have good physical training, but motorcycle stunts are not purely physical. Sometimes those stunts really can’t be done because it requires physical memory and brain access. You can do it today, but maybe not tomorrow. When I practice after work, I keep falling. I will have shadows and pain, so I don’t dare to practice again. I hit my instep and toes a few times in the middle, and I also took X-rays several times because everyone was worried that I would get injured. Now, riding a motorcycle has become my hobby, just like riding a bicycle before. "

"I didn’t adopt Xiao Xin, it adopted me"

A very important part of "Dog Formation" is getting along with dogs. Before the movie started, Peng Yuyan went to learn to train dogs and cultivate feelings with more than ten black dogs. "At that time, there were many dogs in the crew, and the animals were uncontrollable in filming, so I had to cultivate a good relationship with each dog. During filming, many scenes were shot to the end, and there were not many editing parts, so I would rehearse with the dogs many times in advance. I think dogs know what we are talking about. When we were filming, we knew what we wanted them to do. Every dog has its own personality, even if they are the same color, but their eyes are different. There were a total of more than a dozen dogs at that time, and I remember every one of them. We’ve been training and cultivating our relationship for a long time. We have scenes of eating, bathing, sleeping, biting me, and licking me. To some extent, the dog is the real star of this drama. "

Peng Yuyan has been with these dogs for more than four months, and there is a scene in which Erlang is bitten, so Peng Yuyan has to be bitten by dogs many times during the audition, "One time, I didn’t wear protective gear, and the dog habitually came up and bit my leg, and I was bitten before I could get out of the way. It sometimes bites me when it is not happy, but I simply don’t hide and let it bite. Of course, there is protective gear to protect it, but it will still hurt. Because the dog bites without letting go, even if it wears protective gear, it will still be bitten until it is bruised. If there is no protective gear, it is estimated that the second one will not be able to shoot, but slowly I bite a lot, and I will get used to it, and I am not afraid. A dog biting is a normal and instinctive behavior, how can you ask an animal to lose its animality. The play "Dog Formation" is quite philosophical, although I don’t have any lines, but the play with animals can show a lot of human parts. Dogs are human to some extent, they just don’t talk. Dogs know if there is any fear or anxiety in you, they use their eyes to communicate, and they use their sense of smell to identify and judge what the person has experienced. Maybe because dogs don’t have language, their senses become clearer, and they remember the smell of you. They can feel what mood you are in, or whether you like dogs or not. I believe that dogs can feel the energy of a person, and in their eyes, everyone’s color is different. "

"Xiao Xin," the black dog in "Dog Formation," also won the "Jury Prize" from the Organizing Committee of the Golden Palm of Dogs at this year’s Cannes Film Festival. After finishing, Peng Yuyan also adopted Xiao Xin. "I have three dogs now, one is Xiao Xin in" Dog Formation ", and the other two are puppies born to the pregnant dog in the play. These three dogs have been with me until now."

Xiao Xin is the dog who has played the most roles against Peng Yuyan. "On the first day I went, he could sleep next to me for 20 minutes without fear. He is the only dog who can sit next to me in the shower and act with me. Xiao Xin is very obedient, he doesn’t bark, but he is very smart. Every time I look at him, I know that his eyes are thinking, and his eyes have subtext. Xiao Xin can really perform, very spiritual, and has his own ideas, but he can’t say it. The other two puppies adopted, a male and a mother, will want to convey some ideas when watching people. The male is a little more dormant, but he is also very cute and has his own personality."

Owning a dog changed Peng Yuyan’s daily life. He got up at 6 o’clock, developed the habit of walking the dog three times a day, took care of the dog’s daily life, and even went to Cannes to attend the film festival. Most of his luggage was dog-related supplies. Peng Yuyan said that filming "Dog Formation" with Xiao Xin changed his perception of performance, and owning a dog changed his outlook on life and values. Xiao Xin is now more than three years old, and his feelings and tacit understanding with Peng Yuyan have become deeper. The pure, direct and comprehensive expression of Xiao Xin also made Peng Yuyan pay more attention to the present moment of life and cherish every moment with him. He said frankly, "I didn’t adopt Xiao Xin, but he adopted me."

This was the most unknown filming experience. There were many moments of helplessness, vulnerability and even fear

Despite a lot of preparation, Peng Yuyan smiled and said that when he arrived at the scene, he realized that it was different from what he imagined. "I can’t predict how the dog will perform, so I have to overturn the previous preparation, fully immerse myself in the moment and give an intuitive response. There are many moments of helplessness, vulnerability and even fear in this process, because I don’t know if the performance is accurate, and the only thing that can help me believe in myself is the dog who is playing against me, and they are the most authentic."

The director, Guan Hu, did not want to see any trace of performance on Peng Yuyan. Peng Yuyan said: "He wanted to shoot a real person in life, and for me, this was the most unknown shooting experience. I can only trust the reaction of the animals in the opposite scene. This movie changed my brain’s understanding of acting to some extent, and made me have a completely different understanding of acting."

Peng Yuyan liked Guan Hu’s "Bullfighting" and "Killing Life" very much. "When I watched the movie, I felt that the actors in it were tortured badly, and when I made" Dog Array ", I also wanted to be abused and watched. Actors in such an environment will be in a different state, and I don’t need to change too much by myself, because the cold and wind in the northwest will naturally give me a feeling of living there. I have always liked unknown things, and this time, I didn’t make any deliberate designs for the characters. The director and I both hope to pursue the most realistic and life-like performances, putting aside words and performing with our eyes and bodies."

"Dog Formation," Peng Yuyan’s film with the fewest lines, admits that it makes the performance more difficult, "because it is difficult to strengthen the body, especially many long shots to the end, and close-ups. When there is a camera, I feel that I need to give something, and I will realize that someone is watching, and it must be different from not having a camera. So when the camera is far away, it is easier for me to perform more loosely, but it is impossible to be too loose, and it is difficult to find that balance. And the director has found a lot of local amateurs to act with us. If I design my performance, the effect will become very strange."

Living without a cell phone signal, purely immersed in creativity

This is Peng Yuyan’s first time working with the director Guan Hu, and he is very honored. "My role may be the inner world of the director Guan Hu, the medium that the director needs when he wants to talk to the world, and I complete this dialogue through performance. The director has high requirements for the work and details, but he still gives me a very free space to create. It is really not easy for the team to shoot such a difficult artistic work in such a harsh environment. I am very grateful for this experience. Our group of people created such works together. For four or five months, we lived without a cell phone signal, and we were purely involved in the creation. It was a rare experience in my life."

Peng Yuyan praised Guan Hu for knowing how to act and being very good at acting. "The director seems to like filming animals and challenging himself. He knows exactly what he wants to do, and he doesn’t use the camera for more than a second. If the actor does something wrong, he just doesn’t want it. The director makes me feel very at ease, and I was a little afraid at first, but he takes great care of the actors and allows us to have a very comfortable environment to perform, and he will make everything around him meet his standards. He is a very demanding director, which I think is great. The director doesn’t have much setting for me, because my character doesn’t have lines and doesn’t have much action. He is stricter on actors who have lines."

Peng Yuyan laughed and said that in one scene of his scenes with dogs, there were 80 or 90 shots, "The director said that he broke the record of Teacher Huang Bo and the cow. In fact, for every scene with dogs, I basically have to shoot 30 or 40 shots. The final feeling of this film is that I will no longer shoot with animals, haha."

The director of Guan Hu hopes that Peng Yuyan is real enough and life-like enough, "I think it’s very good, I tell myself that every shot should be like the first shot, how to keep myself in the first state every time, which is really the hardest. So, I will be a little different for each one, depending on which one the director likes. Sometimes it’s more fun, sometimes it’s a little bit more small, and it gradually becomes more and more natural and more open. Seeing which one the director likes and which one to choose is actually a good exercise. Because sometimes three or four shots are taken in a scene, and the director says it’s good after the first shot, but for me, if I shoot 30 shots, of course I can have the opportunity to use 30 performances, then see if I can think of 30 performances, which is actually a big challenge. Moreover, every time a dog’s performance is different, so I can’t design it. Every time I act with a dog, I will react directly to what it does, so acting with a dog is probably the most natural. If it kisses me or bites me, my most instinctive reaction will be made, and the director will be happy, and the audience will see the real reaction. "

Try to change yourself a little bit instead of doing what you are better at

The character of Jiro is very different from Peng Yuyan’s personality, but Peng Yuyan said that he has always liked this contrasting role. "I was not a gymnast before, but I just made" Roll Over! Ashin "to make myself like that. Of course, I am much different from Jiro. In fact, whether it is this kind of literary film, sports inspirational film, police and gangster film, I try to make myself a little more change, rather than choosing to do something that I am more good at. I hope I can try every genre. This time, the director Guan Hu came to me. The director thinks he can change me to this, so I will try my best to meet the director’s requirements."

Talking about the "distance" between the character and himself, Peng Yuyan said: "Maybe I don’t look like the character, but I find it interesting that people don’t necessarily know what kind of personality I am. The me I learned through interviews or other channels is to some extent the’Peng Yuyan ‘I am playing. The real me has many sides, and the real me may be hidden in my role."

Every play that I have filmed has also become a part of Peng Yuyan’s own life. "Whether it is the skills I have learned or the friends I have made, such as cyclists or MMA instructors, it will become a part of my life later. For example, I got my license as a dolphin trainer for filming. Although I don’t usually think about it, when I go to Ocean Park, I suddenly recall that experience. This time I met these dogs in" Dog Formation "and wanted to continue the relationship with dogs into my life, so I adopted Xiao Xin."

Peng Yuyan believes that one of the blessings of being an actor is having images to help him record his life. "Many things don’t seem to exist if I don’t remember, but I am lucky to have images to record, and I will remember what year I did. When I received" Dog Formation ", I thought that meeting a character like Erlang at this time must have some meaning, and I can gain something in the days to come. I think it is a gift."

When he was 40, Peng Yuyan said that the mood when he made "Dog Formation" was different from before. "As I got older, I also experienced more things. This play is the theme of magical reality, and it is the story of a frustrated man who finds himself again. A lot of my thoughts changed during the epidemic period, and when I met this character, I could convey my understanding of the world. For example, Jiro was at a loss in the face of the new world, and his vulnerability and confusion were also my feelings about the outside world at that time. Whether it is the director or me, we are willing to fully commit ourselves to creating a work of art that may not be so commercial. We are willing to take risks to do this. We have the same bravery as Jiro."

By our reporter Zhang Jia

Photo by Xiaoxuan

(Beijing Youth Daily)

　　Science and Technology Daily, Beijing, November 12 (Reporter **) According to the official website of the British Imperial College of Technology, researchers at the school and M Squared have joined hands to develop the world’s first quantum accelerometer for navigation. This quantum "compass" is an anti-interference navigation device that does not rely on global positioning satellites (GPS) and can determine the exact location of any place on earth.

　　While most navigation today relies on global satellite positioning systems, including GPS, that send and receive signals from satellites orbiting the Earth, the new quantum accelerometer is a stand-alone system that does not rely on any external signals. This is especially important because satellite signals can be blocked, intercepted, or even sabotaged or attacked, making accurate navigation impossible.

　　Accelerometers measure changes in the speed of an object over time, and use this change and the object’s starting point to calculate the object’s new location. While accelerometers are found in devices such as mobile phones and laptops, they must be recalibrated frequently and, for navigation, can only work continuously for a few hours at a time.

　　The team demonstrated the mobile, commercially available quantum accelerometer at the UK’s National Quantum Technology Showcase. It works by measuring the movements of ultracold atoms at extremely low temperatures, close to absolute zero, where they behave in "quantum" ways, like matter and waves. "When atoms are ultracold, we have to use quantum mechanics to describe how they move, which allows us to build devices such as atomic interferometers," said Dr. Joseph Cote, of Imperial College’s Cold Matter Centre.

　　To make atoms cold enough to detect their properties, powerful lasers that can be precisely controlled are needed. M Squared has spent three years developing a universal laser system for cold atom sensors that features high power, low noise and frequency tunability to cool atoms and provide an optical scale for acceleration measurements.

　　The researchers point out that the new quantum "compass" is designed to navigate large vehicles, ships, etc., but it can also be used for basic scientific research such as finding dark energy and attractive force waves.

　　In 2013, quantum research was identified as a priority area by the UK government, with a focus on military technology. Since then, through the UK National Quantum Technology Programme, the UK government has invested ￡270 million in the field over five years.

　　Editor-in-Chief Circle

　　Quantum physics has overturned all kinds of common sense in the macroscopic world, and particles with wave-particle duality seem so erratic and mysterious. In fact, many technologies are based on quantum physics, but ordinary people are ignorant. Now, quantum accelerometers based on quantum physics have come out, which do not rely on GPS, and can achieve precise positioning and precise navigation on their own. More than 100 years after the advent of quantum physics, various applications based on quantum technology are also coming to people. Using quantum properties, we may be able to modify and upgrade more devices that are currently widely used, making them simpler and more accurate. Has the era of commercial application of quantum technology begun?

Cctv newsAccording to the Central Meteorological Observatory, at present, due to the influence of cold air, many places in northern China are experiencing strong winds, cooling and dusty weather. At the same time, cold air collides with warm and humid air, and there will be heavy rainfall in Hunan, Jiangxi, Zhejiang and Guangxi today. The Central Meteorological Observatory issued a blue warning of rainstorm and sandstorm this morning.

The Central Meteorological Observatory issued a blue rainstorm warning this morning.It is estimated that there will be heavy rain in parts of southeastern Guizhou, south-central Hunan, most of Jiangxi, western Zhejiang, northwestern Fujian and northwestern Guangxi from day to night, among which there will be heavy rain (100 ~ 120 mm) in parts of northeastern Guangxi. Some of the above areas are accompanied by short-term heavy rainfall (the maximum hourly rainfall is 20 ~ 50 mm, and the local area can exceed 60 mm), and there are strong convective weather such as thunderstorms and strong winds. Tomorrow, the rainfall in the south will obviously weaken, and there will be moderate to heavy rain and local heavy rain in parts of Guangdong and Guangxi.

The Central Meteorological Observatory continued to issue a blue warning of sandstorms this morning.Affected by cold air and strong winds, there are sand-blowing or dusty weather in parts of southern Xinjiang, central and western Inner Mongolia, northern and eastern Gansu, Ningxia, Shaanxi, northern Sichuan Basin, Shanxi, western Hebei, Henan, central and western Shandong, Hubei, northern Hunan, northern Anhui and northwestern Jiangsu from day to night, among which there are sandstorms in parts of southwestern Inner Mongolia, northeastern Gansu, central and northern Ningxia and northwestern Shaanxi. Tomorrow, the dusty weather in the above areas will gradually weaken.

The May Day holiday will be officially opened tomorrow, and it is expected that the weather in China will be more complicated in the middle and late period of the holiday. From the 1st to the 3rd, there will be a strong rainfall process accompanied by strong convective weather in the south. Affected by frequent cold air activities since the 2nd, the temperature in most areas north of Huanghuai dropped significantly, with precipitation in many places. Please pay attention to the latest forecast and early warning information, arrange the travel time reasonably, and avoid delaying the trip due to weather.