https://hkmdb.com/db/people/view.mhtml?id=56092&complete_credits=1&display_set=eng
I had said I'd come back and finish up the Korean side of things for Aloha Little Vampire, but I got a bit distracted (just a bit

A few years back when I began research on him, he was mixed on various sites (including KMDB) with Kadet Lee Seung-hoon and another actor called Lee Seung-hoon (and sometimes others too

Apart from being selected as the co-lead in Shaolin And Taichi, he's had surprisingly few moments to show off his impressive martial arts skills despite his obvious talent. Even in some of the early films in his career he was playing non-fighting characters, sometimes exclusively. In Korea he's actually better known for being a regular actor in dramatic films and TV series'.
He was credited in but not yet ID'd in most of his relevant films: 10 Shaolin Disciples [1981]; Deadly Shaolin Longfist [1982]; Invincible Obsessed Fighter [1982]; Shaolin And Taichi [1983].
So there were only two films to add, Aloha Little Vampire Story [1988] which I'd already uploaded under the name Li Yong-wan (a variation of the Hanja for Lee Yeong-man); and Magnificent Natural Fist in which he's really a special guest.
I merged the two pages and added any missing Hanja and Hangul. The only other info to update was his DOB which said 04-Feb-1961 (KMDB also says 1961), but his actual DOB is 30-Nov-1955.
There a decent bit I can write about him, so expect a mini bio somewhere down the line. But for now, here are his ID's for all 6 of his HKMDB films (and tagged Gaijin84's pic in Deadly too).
10 Shaolin Disciples [1981] --- 2 roles
https://hkmdb.com/db/movies/view.mhtml?id=9096&display_set=eng


Deadly Shaolin Longfist [1982] --- 2 roles
https://hkmdb.com/db/movies/view.mhtml?id=19173&display_set=eng


Invincible Obsessed Fighter [1982]
https://hkmdb.com/db/movies/view.mhtml?id=10341&display_set=eng

Magnificent Natural Fist [1983]
https://hkmdb.com/db/movies/view.mhtml?id=10057&display_set=eng

Shaolin And Taichi [1983]
https://hkmdb.com/db/movies/view.mhtml?id=11551&display_set=eng

Aloha Little Vampire Story [1988]
https://hkmdb.com/db/movies/view.mhtml?id=11808&display_set=eng

Cheers