Lama Pai, Hop Gar and Tibetan White Crane all share these common theories.
The Eight Character True Essence: ôStrike the place that has a pulse, never a place that has no pulse, and stretch the arms out while keeping the body away".
Chan (ruthlessness): Chan represents the mental state that must be achieved. When attacked, there is no room for ambivalence or hesitation. The student must commit themselves to being
totally ruthless. All strikes must be executed full force, and all blocking motions must destroy the opponent's limbs.