Polie is a double-reed gas-sounding instrument of the Zhuang nationality. The Zhuang language is also called Bilie and Bielie. In Zhuang language, "wave", "bi" and "bie" all mean blowing, and "column" means pipe, which means blowing pipe. The Han people call it the Zhuang Suona. It is a folk musical instrument with a long history. After reform, it has become an excellent solo instrument with be...