This looks interesting stuff. I did a bit of hunting and came up with this:
http://www.kungfucinema.com/categories/wuxiapien.htm
It had a definition of Wuxia Pien:
Wuxia Pien as a storytelling genre draws from Chinese mythology and the more esoteric aspects of martial arts. It usually chronicles the exploits of heroic knights who fight to uphold justice in a mythical realm where powerful clans of heroes and villains dominate society and vie for control of the "martial world." Common elements to these stories include swordplay, flying, magic, weapons infused with special properties, and elaborate lairs or traps. In serialized accounts that appeared in Chinese newspapers in the 19th century, long-running wuxia stories were popular. In this period, these stories were also theatrically dramatized in Chinese opera where performers employed martial arts and acrobatics on stage.
Is this much the same as just Wuxia? Or are they slightly different?