Hi,
what's are the major essential theories and concepts in Bak Mei kung fu.

What are the differences and similarities between Bak Mei and wing chun in terms of theories and applications.

Does Bak Mei also have the 8 angles of attack and 8 directional footwork.

I remember reading the legends of kung fu article in an issue of black belt magazine about how Bak Mei practioners inhale when striking to create compression like a balloon, when every other style exhale. Can someone explain how this works and the logic behind it.

Thanks
kung fu fighter