How did the "surgeon" who performed magic in the third season of China's Got Talent take his head off?

this magic trick is very good. But if you look closely, you can see that his shoulder is fake and fixed when he plays. And the sleeves are fat. The head on the table is fake. When I took my head off, I put it under the table and brought it up. What I brought up is fake. At this time, the head shrinks in the human abdomen, and the fake shoulder acts as a support. When he moved, his left hand blocked his clothes to prevent his head from being exposed. At this time, the whole person is shrinking below. It can be seen that his hands are not natural when holding things. Because they all groped by feeling. When he picked up his head, he put it under the table first, and then raised his own head. I can see that his shirt followed when his head came up. At the end of the performance. I put my hands on my chest to hide his props. Thank you. The above is my opinion.