It is a percussion instrument, which is generally used to render rhythm. The tambourine is made of metal on the frame around the tambourine, like the tambourine in Xinjiang. Sand ball is also called sand hammer. It is a hollow ball filled with metal sand. It will produce a rustling sound effect when shaken. The bell, also called the bell, is two small copper bells made of copper. When it collides, it will make a crisp jingle.