Wing-Chung isnt really my bag, having only done a little bit for fun and subsidiary training. However, i would suggest that where his advantage is domination of the center line and punching through the shortest route to the target, you (here we bring in the Karate [IMG]http://www.fightingarts.com/forums/ubb/smile.gif[/IMG]) should not attempt to meet him head on and battle him on his own ground -very "Art of War" I know. Counter his lateral domination with "sabaki" - control the circle, and constantly move to and dominate his blind spot through the most economical movement ie: around the lead leg, furnishing this movement with strikes that compliment the circular movement.

Regds
Mr V