The folk instrument Leyou of the Buyi people in Zhenfeng is a wooden double-reed straight-blown instrument. The tube is about 40 cm long, with six sound holes of the same size on the tube, and a double-reed mouthpiece made of wild silkworm cocoons is inserted into the tube head. The sound of the tube is , and it can usually produce eight notes. It is mainly used for solo performance, and there are also ensembles with instruments such as suona and flute. The song named after it as an accompaniment is called Leyou tune. The sentence structure and singing of Leyou tune are relatively free, and the lyrics are relatively concise. The simple supporting words in the lyrics are an imitation of the sound produced by the Leyou instrument when it is played. According to the folk historical legends of the Buyi people, the Leyou of the Buyi people in the Beipanjiang River Basin was produced in the Yuan Dynasty when Sanqu was developed. It did not have six holes at first. After folk inheritance and processing by the Buyi people of successive generations, it developed into the six-hole Leyou. So far, it has a history of more than 700 years. The tone of Leyou is bright and crisp; rich and sweet. Buyi men often use it to express their inner feelings such as acquaintance, interrogation, love, farewell, longing, broken heart, suspicion, etc. The songs often played include "Invitation Tune" and "Missing Sister Tune". Leyou playing mainly adopts natural breathing method and circular breathing method. If circular breathing method is adopted, a tune can be played in one breath, which is a smooth and smooth work, and requires extremely high skills. The fingering of Leyou playing changes quickly and is very skillful: when playing, the fingers constantly vibrate and hit the sound holes to produce vibrato; from the high or low pitch, it appears briefly and immediately returns to the original sound to produce a strange sound; all six holes are pressed to produce a tube sound. In addition, the fingering technique can also produce Li sound and Ba sound, and the sound of the double reed resonance of the insect whistle makes the timbre of Leyou more unique. There is no measuring tool in the production of Leyou, which is mainly made based on the long-term aesthetic experience of the Buyi people. Its main parts are: resonance tube: made of bamboo, it is the sound amplification part of Leyou and has the function of changing the timbre. The rod is carved from boiled and baked paulownia wood. The six sound holes are of the same size and the hole spacing is precise. The mouthpiece is made of wild silkworm cocoons, which is not easily deformed and has a unique tone. Leyou carries the Bouyei people's emotional elements and survival attitudes in the historical changes, such as closeness to nature, oppression, creation of labor, and pursuit of life; its direct expression, relatively fixed melody content, emotional dedication and unique musical flavor convey the Bouyei people's understanding of emotions and observation of life, and at the same time give people an aesthetic experience that transcends time and space and transcends ethnicity. All of these are of great reference value for the realization of research in national history, folklore, literature and art, aesthetics, etc. In 2007, it was announced by the State Council as a project in the second batch of intangible cultural heritage list.