Leyou has deeply rooted in the life of the people of Buyi and has been passed down from generation to generation. Leyou is a folk double-reed vertical joy instrument of the Buyi nationality. Shaped like a suona, without a bowl, it is played with a worm whistle, which can be played solo or as an accompaniment to singing. It is popular in the vast area of southwestern Guizhou. There is a legend about the origin of Leyou.

According to legend, a long time ago, there was an orphaned descendant named Lejia (orphan and widow) in the village of Buyi. He worked for the chieftain since he was a child. When he grew up, he couldn't stand the bullying of the chieftain, so he fled to the mountains to open up wasteland. One day, when he was resting under the paulownia tree, he was very sad when he heard the lonely and long chirping of the cicadas. So he found a dried paulownia tree and wanted to make a musical instrument that could express his emotions. When he was worrying about what to use to make the whistle to make it sound, a cocoon happened to fall on the paulownia wood he was cutting. , Sure enough, he made a melodious voice, and he was very happy. Then he drilled a few small holes in the paulownia wood pipe, and he blew out his beloved tune, attracting a lover who sympathized with him. The two fell in love with each other and became a good friend. Live a free and happy life. Later, in the process of making Leyou, each made a variety of Leyou with their own talents, and each played a very beautiful tune. Make it a medium for future generations to "wave whistle" (talk about love). Since then, such woodwind instruments have been called "Leyou" by the Buyi people.