Don't know who this is just that I came across this surfing on Youku.
Looks to be a seminar type situation, but I don't know Mandarin so the beginning is just lecture followed by demo starting around 10mins. You guys can skip to that point to see the action.
Some really good stuff on here I think. The reactions of the students look very genuine with some guys being slammed on the floor and flying back sliding from the force. Notice the floor is very slippery but the master himself doesn't go back, only the students.