Yang Sze collaborated with Van Damme in a movie directed by who?
Double Impact: Double Impact is a 1991 American action film written and directed by Sheldon Lettich, and written, produced by and starring Jean-Claude Van Damme in a dual role as Chad and Alex Wagner. Bolo Yeung: Yang Sze (; born 3 July 1946 in Guangzhou), better known as Bolo Yeung, is a former competitive bodybuilder, martial artist and a martial arts film actor.
Sheldon Lettich