Wang Guangcheng square dance positive and negative direction is not the same?

I also noticed, recently the State General Administration of Sports to promote the 12 sets of square fitness dance in 9 sets, led by Mr. Wang Guangcheng dance, its front demonstration is "mirror", that is to say, he danced is the effect we see in the mirror, the video of people out of the right hand, to the right, we should be out of the left hand, to the left, like he is the same as you see his direction in the mirror. The man in the video comes out with his right hand and goes to the right, we should come out with our left hand and go to the left, just like he is you in the mirror. The explanation video he made, which provides a breakdown of the backside movements, is what we see on the backside of him, thus creating a situation where the front and back sides are not in the same direction. If you want to learn, it is recommended to follow the explainer video (which is the back side).