The square dance demonstration of Mr. Wang Guangcheng is a mirror teaching, just like what you see when you stand in front of the mirror. The direction of the teacher's movements is deliberately reversed. When you look at it from your point of view, if he goes to the left, you go to the left, and if he goes to the right, you go to the right.
There is a breakdown of Sensei's back movements. You are standing on the back of the teacher and jumping with him, so the direction is not consistent.