Yuen Woo-ping
In 1980s, Mok played an Interpol Agent in 1986 film "Magic Crystal" along with Andy Lau, Cynthia Rothrock and Richard Norton. Mok played second member of Col Young's commando in 1987 film "Eastern Condors", alongside Sammo Hung, Yuen Biao, Joyce Godenzi, Yuen Wah, Billy Chow, Corey Yuen and Yuen Woo-ping.