The poems in The Book of Songs are originally the lyrics of music. According to the nature of the original song, it can be divided into three categories: wind, elegance and ode, and its expression techniques can be divided into fu, bi and xing. Together with wind, elegance and praise, they are called "six meanings". The Book of Songs, also known as Poems or Poems 300, is the earliest collection of poems in China with a history of 2600 years.