Cheung Wing-fat (simplified Chinese: 蒋荣发; traditional Chinese: 蔣榮發; pinyin: Jiǎng róng fā), also known as Mars (Chinese: 火星), is a Hong Kong actor, action director, stuntman and martial artist. He is one of Jackie Chan's best friends. ()
Was a member of Madame Fan Fok-Fa's The Spring And Autumn Drama School's Peking Opera. Was a member of Jackie Chan's Stuntmen Association.