The laan sao will be described as locking arm. It is used to free some space from the opponent in front of the body, to build up space in which...
encyclopaedie
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.
The scissors gaan sao is to be considered equally as defensive or offensive move. It protects the whole upper body from waist to head.
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.