Alan Chui Chung-San (Chinese: 徐忠信) was a Hong Kong actor, director, choreographer, martial artist and stuntman. He was known for being an action director and stuntman. Chui was known for films such as The Rebellious Reign, Kung Fu Vs. Yoga, Two Fists Against the Law and 7 Grandmasters; as well as other various Taiwanese television shows.