Wing Chun's Most Famous Principle. Wing Chun's centre line structure deflect the opponent's attack through the centre. Through the economy of moment, the centre line concept relates the ability of moving efficiently and directly against an attacker.
Sergei Bubka repeatedly & deliberately broke the world pole vault record by the smallest possible height so he could cash in on a Nike bonus with each new record. In a 2 year span, he broke his own world record 14 times.