The ox horns are the lip-vibrating instruments of the Han, Yao, Yi, Miao, Jingpo, Naxi, Nu, Dai, Buyi, Tujia, Gelao, Li and other ethnic groups. It is popular in Guangxi, Guizhou, Yunnan, Sichuan, Hunan, Guangdong, Hainan and other provinces, and each place has its own characteristics. The Yao people in Nandan in northern Guizhou and Libo in southern Guizhou use the most distinc...