Tang Soo Do (당수도, pronounced [taŋsudo]) is a Korean martial art "incorporating fighting principles from Soo Bahk Do (as described in the Kwon Bup Chong Do) and techniques from northern and southern Chinese Kung Fu.". The techniques of what is commonly known as Tang Soo Do are primarily shotokan karate, subak, taekkyon and kung fu. Tang Soo Do literally means "China Hand Way". Chuck Norris, popularized Tang Soo Do in the United States, and evolved the martial art Chun Kuk Do from it.