The sanwzin (pinyin: sān xiàn qín) is a plucked stringed musical instrument of the Jing people. That is, the Sanxian of the Jing nationality. Unique in shape and rich in tone, it is often used for solo and folk song accompaniment, and is deeply loved by the Jing people. It is popular in Shanxin, Wanwei and Wutou in Fangcheng County of Guangxi Zhuang Autonomous Region.

The structure of the shawzin is composed of a resonance box, a headstock, a stem, a peg, a bridge and strings, and the body is 118 cm long. The resonance box is flat, narrow at the top and wide at the bottom. It is a trapezoidal box-shaped hollow body. The form is exactly the same as the resonance box of the Mongolian stringed musical instrument Matouqin. Although they are spread in the north and south of my country and in different parts of the sky, the piano box is so consistent in my country. is rare.

Often used for solo or to accompany folk songs. It is deeply loved by young men of the Jing nationality and often plays for self-entertainment. In the traditional "Ha Festival" of the Jing nationality, the girl, as "Hamei", sings while holding bamboo bangs in both hands, and the young man, as "Hage", plays the shawzin to accompany her. "Ha Ge" is composed and sung immediately, with a wide range and rich content. The shawzin is skilled in acting, and the tune is beautiful and lyrical. In this joyous folk cultural and entertainment activities, how many unmarried young men and women met, fell in love, and formed a happy marriage.

The more famous solo pieces include "Zhuxiang Song" and so on.