The five-month flute is a musical instrument called Pai Yao, a branch of the Yao ethnic group. Yao language means cutting bamboo to make flute and blowing flute in May, hence the name. The Wuyuexiao has a long history. In the book "Responding to Lingwai" (Volume Seven Musical Instruments Gate) written by Zhou Qufei in the Southern Song Dynasty, there are records about Y...