Guangxi Bayin, also known as "Guinan Bayin", is a type of Chinese folk instrumental music. It uses eight types of drums, gongs, cymbals, flutes, Xiaos, strings, pianos and human voices. The musical instrument is played and named "Bayin", and it is mainly spread in the settlements of Han, Zhuang and Yao in Nanning, Yulin, Guigang, Qinzhou, Wuzhou, Hezhou and other places. It has beautiful and loud tunes, warm and cheerful playing style, and is rich in Guangxi's local ethnic characteristics. It is an influential folk instrumental art in Guangxi, among which the eight tones of Yulin are the most representative. ?Yulin is located in the southeast of Guangxi Zhuang Autonomous Region. It was called "Yulin" in ancient times and has been known as the "Millennium Ancient State" since history. As early as the end of primitive society, there were tribes such as Xiou and Luoyue. When Qin Shihuang established a county in the south of Lingnan, Yulin began to have an administrative system. At the end of the Tang Dynasty and the beginning of the Song Dynasty when Yulin was established as a state, the folk music of ethnic minorities from the northwest border began to be introduced to Guangxi, and soon spread to southern Guangxi. Influenced by these foreign folk music, folk artists of the past dynasties in southern Guangxi blended local folk music elements to create folk instrumental music with local characteristics of southern Guangxi - Guangxi Bayin. It was recorded in "Lingwai Daida" written by Zhou Qufei during the Xiaozong period of the Southern Song Dynasty and "Yulin Zhouzhi" published during the Guangxu period of the Qing Dynasty. ?The performance types of Guangxi octave are divided into Yulin soft field octave, hard field octave, Nanning Zhuang Wenchang octave and Wuchang octave due to different regions. In terms of performance form, it is expressed in the form of ensemble, mainly sitting and walking. In terms of music function, it is mainly used for folk and folk activities such as the completion of new homes, weddings, funerals, birthdays, openings, festivals, welcomes, etc. It is also used as accompaniment for dragon dances, lion dances, folk operas, dances, and on mass literary and art stages. The performance and musical expression are very rich, the artistic vitality is strong, and it is deeply loved by the people. In 2011, wind and drum (Guangxi Eight Music) has been included in the third batch of national intangible cultural heritage representative projects.