The movie was released on DVD in the U.S. last year by Dragon Dynasty under the title King Boxer. It contains lots of special features as is usual for Dragon Dynasty's releases, but the real gem is a commentary track featuring none other than Quentin Tarentino. The DVD is well worth the price for that alone.
1) One of the musical cues from the movie was used in the soundtrack of the Kill Bill films.
Link(s) of interest:
1) Click here to read a plot summary of the film, but beware of spoilers.