Chui Chung-San (often known as Shu Zhong Xin, Hsu Zhong-Xin or Alan Hsu; born 16 August 1952 is a Hong Kong actor, director, choreographer, martial artists and stuntman. He has been known with being highly solid action director and stuntman. Chui is well known for the movies such as The Rebellious Reign, Kung Fu Vs. Yoga, Two Fists Against the Law and 7 Grandmasters, as well various Television shows from Hong Kong and Taiwan. Chui is mostly in charge for directing various wireless television series.