One-Armed Swordsman. it could be argued this is a better film, though it really builds on the first one. it's definitely just as good, which is saying something. there aren't a lot of true sequels in HK movies from this time period (that would make for an interesting list some day) so that makes this even more unique. look at that back lot from the Shaws' studio.
our hero has been summoned to a duel from the 8 Clans. they are not nice people and want to rule the wuxia world.