The tai chi (taiji) dvd/dvds include various tai chi kung fu arts such as quan, sword, sabre, push-hands applications and tai chi for health etc and cover different tai chi styles such as chen-style, yang-style, sun-style, and the arts are demonstrated and explained by these styles' direct-line inheritors such as Grandmaster Chen Zhenglei (Chen style), Yang Zhenduo (Yang style), Sun Jianyun (Sun style) etc.