Chin Na:

Chin Na is a Chinese term describing techniques used in the Chinese martial arts that control or lock an opponent's joints or muscles/tendons so he cannot move, thus neutralizing the opponent's fighting ability. Also Chin Na Su, literally translates as technique of catching and locking in Chinese. Some schools simply use the word Na to describe the techniques.

The recent understanding that grappling is as important as striking has also caused some Chinese martial arts instructors to focus on their Chin Na techniques, even expanding the system by incorporating or developing new ones. This is one reason why the Chin Na of one school may differ from that of another. There are over 700 traditional techniques in the White Crane style of Chin Na alone and even more present in other styles. There are also countless techniques being developed/adopted into these styles, depending on the specific school.