There are several ways to shoot, such as hanging Weiya, robotic arm, and using vehicles, such as airplanes and wind tunnels, to simulate weightlessness. Give a few examples, and those who are interested can have a look for themselves. There is a famous MV shot by a weightless plane, OK Go's "Inverted &; Inside and outside, you can have a look if you are interested; Jackie Chan's Zodiac was shot in the wind tunnel. The film Gravity was shot by a mechanical arm. But the wandering earth is basically shot with hanging Weiya and a wheel.
The virtual part is CG animation, and our movie also uses some of this. Almost all these movies will have virtual AIDS. Will actually shoot some other close-ups to ensure the vividness of the actors' performances and the detailed texture of the costume props. With the current special effects technology, it is difficult (and of course expensive) to make the picture to this extent and achieve the effect close to the real shot.
Then, after the close-up shooting is completed, the special effects department will take a panoramic shot according to these shots. The order of thinking is somewhat opposite to that of conventional shooting. After matching the dynamic situation, material and light in the real shot, the special effects can be shot in panorama.
In addition, in the close-up shot, in addition to erasing Weiya and filling it with green cloth or blue cloth, CG will also be used to add some suspended matter in weightlessness to increase the sense of reality. For example, wandering earth, astronauts in outer space, surrounded by floating safety ropes.