There are various types of Chi Sau; the following information is according to the Yip Wing Chun system.
Chi Sau in the context of Wing Chun Kung Fu is a name given to the unique set of drills, techniques that are exclusive to the Wing Chun system.
Chi Sau normally consists of two people and is also called Stick/Sticky hands.
The purpose of Chi Sau training is to develop ones reflex and to condition the arms.
The common Chi Sau’s are:
Chi Dan Sau (single sticking hands)
Bong Lap – (wing deflecting sticking hands)
Poon Sau (Double sticking hands)
Gor Sau (free fighting)
A few Chi Sau principles:
Never take your opponent lightly
Look for your opponent’s weaknesses