The tan sao is described as a palm up hand. It is an attacking hand oriented forward.
encyclopaedie
The pak sao is discribed as a slapping hand. It's one of the more widely used moves in ving tsun. This move is an excellent preparation for the...
As kwan sao, we describe a move composed of a tan sao and a deep bong sao. It is a defensive as well as an offensive move.
What we describe as jum sao is the sinking elbow. This minimal move protects the under part of the upper body like belly and liver.