Yes, if you take a look here
Start 4.24 to 4.40 see how Jerry capture the center of the Hsing Yee opponent. That is 用中守中,奪中直冲勢, using center capture center uniqueness. The hand doesn't goes out side the triangle , many think Hsing Yee is the mother art of Wck. Well, evidence show they have different DNA and hsing Yee is not Wck lau choong sau 留中手。or remain in center hand. Due to that Wck generate power, handling momentum different then hsing Yee .
http://m.youtube.com/#/watch?v=91yth...%3D91ythWqde-c