Gordon Liu, the Master Killer is the star in this all-time classic kung fu flick. In other words, the actor used by Quentin Tarantino in Kill Bill 1 and 2, was chosen because of his previous kung fu film performances and Quentin wanted him. All of the references to the Shaolin Temple throughout Kill Bill are there for people who understand and have seen these old flicks. The "guy with the mustache" as you say, is Pai Mei, who was used in the old Wu-Tang v Shaolin Movies and has returned in Kill Bill. Ironically, Gordan Liu used to be the character fighting Pai Mei, whereas in Kill Bill he IS pai mei... The influences continue... Many Sound Effects used in Kill Bill are in fact direct samples from the original Kung Fu movies. Anyone who has watched and followed the original movies can see and connect with what Quentin is trying to (and has) achieved in Kill Bill 1 & 2. So, of course Kill Bill isn't even close to being a "copy" of any of these movies.. As with all great movie directors, Quentin HAS been influenced by the all-time classics and greats of this genre, and this is the reason many people don't fully understand or appreciate his work. Brilliant Film, if you like Kung Fu, you should see this!