He got the nickname "Weird Fire Star" after being involved in a car accident leaving him with two scars on his head.
While working as a stuntman on a film in Thailand he got promoted to a supporting actor and needed a stage name.
[1] He became a student of Madame Fan Fok-fa in The Spring and Autumn Drama School.
In 1979, he joined the Jackie Chan Stunt Team and focused more on being a stuntman and action director rather than an actor.
Mars also had minor villain roles in Chan's other hit films, Crime Story, Drunken Master II and Thunderbolt.