Han folk music. Yuefu was first established in the Qin Dynasty, and it was an organization that managed the teaching of music and dance singing under the "Shaofu" at that time. BC 1 12 was formally established in the period of Emperor Wu of the Western Han Dynasty. Its duty is to collect folk songs or literati's poems for music, so as to prepare for the court's performance at sacrifices or banquets. The poems it collected were later called "Yuefu Poetry" or "Yuefu Poetry" for short. It is a new poetic style after The Book of Songs and Songs of the South. Later, those who were unhappy were also called Yuefu or Quasi-Yuefu.