by flying monkey » Fri Jan 25, 2008 12:43 pm
Butterfly kick or xuanzi isn't very hard to do, but you do need proper training to do it correctly. Find yourself an instructor, that'd be best.
However, once you've learned how to do it, you should strengthen your legs, because, believe me, it's supposed to be done a lot higher than it's done on that video.
Good luck!