In fact, this is an ordinary staircase. On the right side of the initial floor, a green curtain with fluorescent green texture was set up on the two floors. Later, the video of me going upstairs and downstairs was spliced by software.

Shooting process:

The video started with a fixed shot. The camera is placed on the platform between two floors. The stairs that go upstairs are on the left, and the stairs that go downstairs are on the right. The host was the first to "try his best". He started in front of the camera, walked up the stairs on the left side of the picture, walked to the end of the stairs and turned right. He appeared on the stairs on the right side of the picture, only to see the host walking slowly back to the camera along the stairs on the right side of the picture.

In order to prove the authenticity of the "impossible step" he created, the video shooter invited others to experience it. An Asian girl in a green T-shirt appeared, and this time the cameraman followed the girl to experience it. After bidding farewell to the host, the girl walked all the way up the stairs, turned right when she reached the platform, and then walked up. On the platform upstairs, she found herself back on the floor where the host was! The girl doesn't believe it. She ran again and found that she was back. She sat on the stairs and shook her head in surprise.