The Dong throat song is named after the word "Hou Lu" in the song. It is a very rare polyphonic song in the music art of the Dong ethnic group. The Dong throat song is mainly spread in Xiaxiang Township, Linkou Town, Jingwuzhou Town, Xikou Town and other towns in Tongdao Dong Autonomous County. The Dong throat song is sung in Pinghua and real voice, and the rhyme is strict. There are three types of throat songs: flower songs, pretty songs, and story songs. They can be sung by men, women, young and old, at weddings and funerals, during festivals, during the day and at night, indoors and outdoors. Most of the throat songs are passed down from master to apprentice. Generally, they start to learn songs at the age of twelve or thirteen, and learn the lyrics first, and boys and girls learn separately. In 2008, the Dong throat song was identified as the second batch of provincial intangible cultural heritage list projects in Hunan Province. As an ancient song in Tongdao Dong Autonomous County, Hunan Province, the throat song is very popular among local people, but the academic research on it is still in the initial exploration stage and needs to be further deepened. According to research, the ancient Baiyue ethnic group, the ancestors of the Dong people, was a nation that was good at singing. "Shuo Yuan" written by Liu Xiang of the Western Han Dynasty once recorded the scene in which the Chu State Ling Yin E Jun Zixi admired the singing of the Bangshi Yue people on a cruise ship during the Spring and Autumn Period and the Warring States Period. The Dong people inherited the tradition of the ancient Yue people's good music, and in the subsequent evolution process, they created a splendid folk music culture, of which the Dong throat song is a typical representative. In history, the Dong people had no written language, so there was no special record of throat song. However, there are many legends about songs, dances, and music among the Dong people, such as "The Legend of Finding Songs", "The Origin of Dong Songs", "The Four Songs Spread to Dong Township", etc. For thousands of years, the Dong people have regarded these legends as the teachings of their ancestors to educate their descendants. During the Yongzheng period of the Qing Dynasty, the reform of the land system in the southern Dong dialect area had been completed, and the society was relatively stable. Historically, well-known Dong singers began to appear; a few singers who received Han cultural education also began to use Chinese characters to create and record Dong songs. Folk "wei ye" (collective guest and collective welcoming social activities) were frequent, and folk singing activities were very active. Throat songs sung by multiple people were further developed and became an important way for people to express love, communicate, praise the world, and entertain. During this period, lyrical throat songs matured, and narrative throat songs began to flourish. Some experienced middle-aged and elderly singers created a large number of throat narrative songs, which were welcomed by people, and a group of influential folk artists emerged one after another. The main art forms of Dong throat songs are "flower songs", "beautiful songs", and "talking songs". The singing form is mainly two-part chorus or multi-part duet. The two parts are high and low parts, with the high part as the main singer and the low part as the accompaniment. Each part blends into one, with separation and combination. Sometimes the main singer sings the lyrics, and sometimes the accompaniment singer sings the lyrics. They interweave and take care of each other, and it sounds like they are chasing each other and are very regular. The tone of throat songs is relatively low, there are not many lyrics, and the dragging is long, so it is difficult to learn. The singing of throat songs requires great coordination. Singers must undergo strict training from singing teachers. Several people who have never sung together cannot cooperate well even if their individual singing level is high, and they may not be able to sing smoothly. There is also the custom of setting up a singing hall for singing throat songs, and there is a strict singing procedure. That is, the singing must be carried out in the order of singing flower songs first, then singing funny songs, and finally singing talking songs. Flower songs are the opening songs, and the content is suitable for a wide range of people, men, women, young and old. The lyrics are mostly about the relationship between people, with mutual praise and encouragement as the content, and there are also songs about mountains, water, flowers and birds, which have deep meanings. The lyrics of each flower song are not long, and most of them are two sentences. Hua Ge has more supporting words and longer dragging tunes. The singers are natural, sitting and standing in a dignified manner, and are very generous. In the singing hall, the sections and time of singing Hua Ge are not fixed, and they can be changed at any time according to the mood of the audience and the singing level of the singer. The more audiences there are, the more confident the singers are in singing, the higher their performance level, the higher the enthusiasm of the audience, the more audiences there are, and the more sections the singers sing. Qiao Ge is the song that singers sing immediately after singing Hua Ge in the singing hall. The singing style and content of Qiao Ge are different from Hua Ge. The melody of Qiao Ge is more jumping, and the lyrics are also different from Hua Ge. How Qiao Ge is sung can show the level and flexibility of the singer. The singers compete with each other with playful and provocative lyrics. Each section of Qiao Ge has four sentences. The lyrics have questions and answers, and you challenge me. The scene is much more lively than singing Hua Ge. The content of the lyrics is also very wide, and it varies according to the scene and the singing level of the other party. When the song is about young men and women flirting with each other, the older audience will leave on their own accord, giving the young men and women a more relaxed venue. When the young men and women are very compatible in singing, they will make an appointment to go to the warehouse building together. When the young men and women are in the warehouse building, they start to sing storytelling. Storytelling is the third tone of throat song. The melody is relaxed and free, and the face-to-face conversation is more emotional, so it is called storytelling. The Dong people love songs and music. The catchphrase "food nourishes the body, and songs nourish the heart" is well-known in the Dong village. The Dong people regard "songs" as spiritual food as "food" as material food, so Dong throat songs have become an important part of the Dong people's life.