Chan, Hung and Mao all got their starts in Chinese opera, a stylized storybook combination of acrobatics, martial arts, singing, and acting. Chan attracted public attention in the early 1970's with his martial arts comedy Drunken Monkey. He began Hapkido training under Kim soon after that film, and still attributes his only official martial arts training to Kim.
"When Jackie first came to my school, his kicks were not very good," Kim recalls. "Most of his stunts involved rolling and gymnastic techniques from Chinese opera. However, with his flexibility and tumbling experience, Jackie quickly learned Hapkido."
Chan eventually earned a black belt in Hapkido, learning all facets of the art and specialing in self defense kicking techniques. He was especially partial to aerial maneuvers such as flying side and back kicks, double front kicks, and flying scissors kicks.
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Chan has even taught Hapkido to the 20 stunt men who work for him. Chan demands realism in his movie fight scenes, and each of his stunt men are skilled in kicking, joint locking, and throwing.