Tai Chi

Taiji (tai chi), short for Tai ji quan, or T'ai chi ch'üan (pinyin: tàijíquán; 太极拳), is an internal Chinese martial art practiced for both its defense training, its health benefits and meditation. The term taiji refers to a philosophy of the forces of yin and yang, related to the moves.

Source : https://en.wikipedia.org/wiki/Tai_chi