Jet Li, 5 times world champion in forms, as a teenager, before making "Shaolin Temple", which is when he was 17...
Jackie Chan, stunt man and movie actor from the age of 15 or so...
Both are trained in the art of MOVIES.
Both can look terrific doing things ON FILM.
Both are probably very nice to be around. Pleasant to talk to, good to work with, dedicated to making fine films.
Fighters they probably are not... or then again, they might be... can't tell, can we?