Video: 吴兆基 Wu Zhao Ji explains why one should not sway too much when playing guqin

Guqin performance by 吴兆基 Wu Zhao Ji (in the 1st video below) and his explanation (in the 2nd video below) of why a person should not 'sway about too much' when playing too much because the Qi 气 (internal energy) may dissipate. Yes, he's actually a modern-era man with some interesting ideas. haha