- Studied at the Peking Opera School under the watch of Master Yu Jim-yuen along with Jackie Chan, Sammo Hung and Yuen Biao, and was a member of The Seven Little Fortunes.
- Got in a real-life fistfight over a comic book with Jackie Chan when they were both 10 years old.
- Adopted the name Yuen in honor of Jim-Yuen Yu, his teacher.
- Began his film career as a stuntman.
- Known for mixing hand-to-hand combat and gun fighting, which is not common in Hong Kong action films.