Li Ga is the balance family. They dealt with leverage, throwing and takedowns. To do these types of things you have to control the balance of your opponent. These members of the family were important to fighting, especially, when dealing with a larger and stronger opponent. This is also most important in close-in fighting.
 

Hoi Ga is the study and application of pressure points, pass and crippling points. By learning the vital points of the body and certain pressure points, one can direct the striking and balance moves of the Tsoi and Li families to more vulnerable areas where it does not take a lot of force to incapacitate or kill an opponent.
 

Fut Ga is the psychology of fighting. The attitudes, internal power, self-confidence, proper breathing and strategy for sudden attack. The proper use of mind and body coordination. Mind over body.
 

Hung Ga deals with the physical conditioning of the body in order for it to perform up to its maximum potential. It includes dynamic tension exercises along with exercise and show forms. The use of geometry, trigonometry and physics help deliver maximum power and also compose part of this system.