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.
encyclopaedie
Biu sao is a forwardly oriented movement, regularly used under the other arm as an emergency attack. It points towards the target one wants to...
The gaan sao is a hand move that reminds of a plough. It moves downwards following the orientation line.
Wu sao will be described as protecting hand. It is the last line of defense in front of the body, before the attack reaches it.