I'd add that Wing Chun, for all its apparent exposure and popularity, has never been able to demonstrate its viability as a fighting system. I have yet to see WC practitioners using its body structure, power generation, trapping or footwork in MMA competition. Nor have I seen WC practitioners spar with good amateur boxers, nak muay, wrestlers, judoka, or BJJ guys with any success. Demonstrations of Wing Chun on the internet, various TV programmes and in my own personal experience all fall firmly within the category of dead patterns - compliant, choreographed and wholly ineffective.