The Bi is a national musical instrument that is popular in Yunnan Province, Xishuangbanna Dai Autonomous Prefecture, Dehong Dai and Jingpo Autonomous Prefecture, Lincang, Simao and Hainan Province. When playing the Bi, it can be played horizontally or vertically, and the methods vary from place to place. The reeds in Xishuangbanna area are thick and long, and they mainly use the...