Master knife, also known as bell knife, ring knife. It is the Manchu, Zhuang, Miao, Yao, Dong, Tujia, Han and other nationalities who shake the body and sound musical instruments. It is called Hama knife in Manchu, and Shaman knife in Northeast. Popular in Liaoning, Jilin, Heilongjiang, Guangxi, Guizhou, Hunan, Hubei and other regions. Master knives are generally made of steel or iron, and there ...