At the end they all duke it out, and while you'd expect - at least if you are weaned on American movies - that they clear up the misunderstandings between them and reconcile as they've always really wanted, that's not what happens. The end of the enmity between them has to be resolved in a blood-debt, so the end is a tragic one, regretted by all. Still, the hero gets the girl, so it's not *that* tragic...
The story here is actually more straight-forward than in many other kung fu movies, and there are other good things, too. The handsome hero, called Pak, is extremely cool. I hope that actor has a great career ahead of him. Jade Leung as the spoiled brat sister/daughter is fun, but a bit stereotypical. Samo Hung as her long-haired father is really good; fatso still has a few punches (and spins, and somersaults, etc.) in him! :-)
Interestingly, this movie (2002) has a fight scene on top of a stone obelisk, which reminds so much of the fight that Morpheus and an Agent have on the roof of the truck in Matrix Reloaded (2003), that it seems pretty certain that the Warchowski brothers pinched it from this movie.
A problem with "Flying Dragon, Leaping Tiger" is that most of what happens is kind of cheesy and silly (the ending being perhaps an exception). But it's entertaining enough, and many of the fight scenes are very good-looking. If you're into kung fu movies, your time won't be wasted. And hey, that guy Pak is a regular Luke Skywalker! :-)
6 out of 10.