Twelve wias hung from the ceiling of the Ten Thousand Year Flame Emperor, all of which were green for later erasure. Subsequently, the staff of the special effects team brought a set of Wia suits, helped Hu Jun put them on, and then tightly fastened the buckles on the Wia suits.

When Hu Jun put on the Weiya suit, Zhang Ran untied the white belt tied around his waist and tied it around Hu Jun's waist. Behind the belt is an iron box the size of a lunch box. Hu Jun hadn't seen this thing, so he said, "What is this thing for?"

Zhang Ran explained: "This is the thruster. The Wannian Yandi is different from Tiangong No. 1, and the cabin is particularly large. Cabins like ours are thousands of square meters. It is very difficult for astronauts to move on their own in such a large space. So, each of them carries a thruster behind their back, which is able to eject gas when activated, allowing the astronauts to move freely in the cabin. ”

Hu Jun suddenly realized: "There are them in "Gravity", but they are worn on spacesuits. ”

The twelve wias were quickly tied to Hu Jun, and then the staff pulled Wias and slowly pulled him into the air. At the same time, the camera on the robotic arm was tightly aimed at Hu Jun.

Zhang Ran looked up at Hu Jun and asked, "Old Hu, how do you feel?" Hu Jun smiled: "It's okay, I haven't hung Weiya for several years, and I'm a little unused to it." Zhang Ran smiled and said: "I think you seem to like space movies very much, why don't you change your role, and you also play an astronaut?" In "Full-Band Blocking Interference", the astronaut on the Wannian Yandi is only Zhuang Yu, but there are many people on the spacecraft in the movie. Hu Jun waved his hand and said: "I'm old, I can't stand the toss, I'm better at playing the political commissar!"

Zhang Ran turned his head and shouted to the crew: "The camera is ready! Wei Ya is ready! Let's test shoot a section!" and then said to Hu Jun: "Wait a minute, I will start, you will do the swimming action, but the action should not be too big, otherwise it will not be roaming space, but swimming in the pool!" Hu Jun made an OK gesture to Zhang Ran. Zhang Ran shouted: "Let's start!"

The on-site staff carefully pulled Wei Yasi and slowly moved towards Hu Jun with him. At the same time, Hu Jun also carefully cooperated with Weiya's movement, and gently pulled forward with both hands.

For any space-themed film, how to express the weightlessness effect is crucial, and it is also a particularly difficult point. In order to truly show the weightlessness in the movie, the directors can be said to have racked their brains and tried all kinds of methods.

At that time, in order to show weightlessness in "2001: A Space Odyssey", the great director Kubrick invited an aeronautical engineer and spent $750,000 to build a circular house 12 meters high, 2 meters wide and weighing dozens of tons. He fixed a camera in the house, and when the actor ran up, the camera recorded what looked like the actor was running along the roof.

To this day, there are two conventional ways to represent weightlessness in films. One is to shoot in a really weightless environment, which does not mean that you really go to space to shoot, but there are special airplanes that can fly at high speed in the form of an upwardly raised parabolic arch, and can form a state of complete weightlessness for a period of time before and after the top of the parabola. The weightlessness scene in the film "Apollo 13" was filmed in this way, the crew and actors flew in a parabolic trajectory at high altitude on a KC-135 transport plane provided by NASA, and experienced about 23 seconds of weightlessness each time, enough for the camera to capture some of the actors' movements.

Director Ron Howard extravagantly filmed 612 weightless flights, and in 612 weightless flights, he successfully shot 234 minutes of weightlessness time shots. However, this technology is not applicable to "Full Band Blocking Interference", the Wannian Yandi is much larger than the KC-135 transport aircraft, and there are many scenes of free cruising in the space capsule, which cannot be filmed at all with the KC-135 transport aircraft.

Another way to do this is to simulate the action, and the cheapest way to achieve this "look-like" weightlessness effect under the Earth's normal gravity conditions is to shoot underwater, where the drag effect of water slows down human movements, allowing for levitation in space and flight-like movements. However, underwater filming has a flaw that does not allow for a realistic representation of the actors' expressions, after all, the expressions of holding their breath and trying to open their eyes are obviously completely different from those performed in the space environment.

After repeated communication with the special effects team, Wu Ershan adopted the method of combining WIA and computer technology. Tiangong Chongcai specially designed a control system, which has 12 wias connected to the actor's body and four tie points. Simple movements are performed by three WIA staff members at the other end of the boat, while complex movements such as cruising around in the cabin are controlled by a computer, or a combination of the puppeteer and the computer.

After Hu Jun swam out more than ten meters in mid-air like a fish, Zhang Ran shouted loudly: "You can stop!"

The staff slowly put Hu Jun down, untied the Weiya on his body, and took off the Weiya suit.

Zhang Ran asked about Hu Jun's situation, and after confirming that he was fine, he took Hu Jun and them to the crew command center. Wu Ershan continued to direct the crew on the scene to prepare for the shooting. Technical consultant Yang Liwei has not yet arrived, so he can't officially shoot, so he can only continue to wait.

The staff turned up the footage just shot, and not only did Wei Yasi pick out the picture, but what was even more amazing was that Hu Jun's clothes were changed and he was replaced with a blue spacesuit. His hands slid slightly, and it looked as if he was really slowly cruising through space.

Hu Jun and Li Xuejian have participated in many blockbuster films, and they know that this is made through cutouts and compositing. Chen Zhanzhan saw it for the first time and was very surprised: "I directly changed Mr. Hu Jun's clothes." Mr. Zhang, how did you get this?"

Zhang Ran explained with a smile: "We hang Weiya for a performance, and the clothes on our bodies have no sense of weightlessness, which looks a bit fake." In order to solve the problem of weightlessness of clothes, the special effects team modeled the spacesuit, so that the clothes could be synthesized onto the actors in post-production, so as to achieve the effect of weightlessness. ”

Chen Zhanzhan sighed: "So that's the case, it's so advanced!"

At this moment, Wu Ershan ran in and shouted at Zhang Ran: "Teacher Zhang, Yang Liwei is here!"

After the sci-fi film "Gravity" was released last year, many scientists and astronauts pointed out many omissions and untruths in the movie. At that time, Wu Ershan felt that "Full Band Blocking Interference" should reduce the loopholes in this area and strive to be realistic. In order to achieve this effect, the crew not only invited five technical experts, but also invited Yang Liwei, China's first astronaut in space, to the crew as a technical consultant. During filming, Yang will assist the actors in simulating weightlessness. However, Yang Liwei is busy with work and can't stay in the crew for a long time, so he can only find time to guide. Yesterday he had a meeting in the magic capital, and it lasted until late, so he could only rush from the magic capital early in the morning.

As soon as Zhang Ran and his entourage came out of the command center, they saw Yang Liwei standing straight in a military uniform. Yang Liwei is not tall, less than 1.7 meters, but he looks very energetic. The height of astronauts should not be too high, because the geometric size of the entire spacecraft cabin is limited, and it is not suitable if it is too tall, and the height requirements of China's astronauts are between 1.60 and 1.72 meters.

"Director Zhang Ran, hello!" Without waiting for Zhang Ran to say hello, Yang Liwei saw Zhang Ran and stretched out his hand with a smile.

"Mr. Yang Liwei, hello!" Zhang Ran shook hands with Yang Liwei and said with a smile, "It's a special honor to invite you here, you are our big hero." The dream of flying for generations of Chinese has finally come true to you. ”

"You're so polite, I'm a fan of yours. Yang Liwei chuckled and said, "I especially like "The Aviator", not only me, but also the astronauts of our astronaut research and training center especially like this movie. They were very excited when they heard that I was going to come over to assist in the shooting, and they all said ouch, we finally have a space movie in China that can show its face internationally!"

Yang Liwei arrived, and the shooting could begin. The staff quickly tied Wei Yasi to Zhang Ran and pulled him into the air. Zhang Ran lay face down in the air, gestured twice like Hu Jun and asked, "Is the action like this?"

Yang Liwei stood below and corrected: "No, you can't row like this in too much space, and the range of action can't be too big." There is a lot of action in the American movie "Gravity", which is not right. It is very characteristic to do actions in space. If you're going to kick your foot out, you have to put your foot forward, which requires a certain amount of force. But once your foot is in the intended position, let it stop in time as well. So once you start to tune in to your body, you have to give another force in time to counteract and stabilize in the new body position, and you do all this must be within a controllable and sure range. ”

Under the guidance of Yang Liwei, Zhang Ran began to practice seriously in the air.

Half an hour later, Zhang Ran basically mastered the characteristics of human movement in space, and the shooting began.

Zhang Ran leaned his hands on his legs, like a fish, or like a torpedo, and slowly swam forward. After he swam more than ten meters, he finally swam to the entrance of another cabin. Zhang Ran grabbed the railing of the hatch and pulled hard, and the whole person flew towards the cabin at a faster speed.

Yang Liwei of the monitor immediately told Wu Ershan that Zhang Ran's action was not right, and he was still too hard. Wu Ershan immediately shouted "stop", and then asked Yang Liwei to go to the scene to guide Zhang Ran.

Zhang Ran had never been on the field to shoot martial arts before, let alone hang Weiya, and now the whole person is hanging in the air to perform, and he has to do movements, and his expression is natural, it is indeed a little difficult, he has performed more than ten times in a row and has not passed.

Yang Liwei knew that it was very uncomfortable for people to be hung in the air, so he asked Wu Ershan: "It's been so many times, and you haven't passed yet, aren't you afraid that Zhang Ran will scold you?"

Wu Ershan nodded very seriously and said: "Of course I'm afraid! If I shouted this kind of completely substandard shot, Teacher Zhang will definitely scold me to death when he sees it in a while!"

Shooting until half past eleven, after Wu Ershan carefully checked the camera and made sure that there were no problems in all links, he stood up straight and shouted: "This shot is over! Hurry up and put Teacher Zhang down! This is the end of the morning shooting, ready to eat!"

Zhang Ran hung all morning, plus the person was sideways for a long time, his head was a little congested, and when he came down, his feet were weak, his eyes were black, and he sat directly on the ground. However, when the staff asked what was wrong, he smiled and waved his hand to indicate that he was okay and that he would just sit down.

Yang Liwei is very optimistic about "Full Band Plunger Interference", and now he is looking forward to this movie, not only because of the director, big stars, and big investment, but more importantly, the rigorous and serious attitude of the crew.

After lunch, Zhang Ran and Wu Ershan went to the command center to bring out the footage taken in the morning. He is the producer, and every shot of the film has to be reviewed. This is responsible for Wu Ershan, and it is also responsible for the movie.

After looking at it carefully, Zhang Ran pointed to the monitor and said, "No, my eyes are a little bloodshot with this lens." It should have been hanging for a long time. It's not particularly noticeable on a monitor, but it's a problem on a big screen. This shot doesn't work, it has to be reshot. ”

Wu Ershan stared at the monitor and looked carefully, there was indeed a slight congestion, and said embarrassedly: "It was my negligence!"

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