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. As for the origin of Bi, there is a legend in the Dai family: there was once a young man of the Dai nationality who loved to sing, but he always felt that the singing was monotonous, ...