The Book of Songs is the first collection of poems in the history of Chinese Han literature. It collects 305 poems from the early Western Zhou Dynasty to the middle of the Spring and Autumn Period, that is, from 1100 BC to 600 BC, about 500 years ago. "The Book of Songs" was called "Poems" in the pre-Qin Dynasty, or it was called "Three Hundred Poems" by rounding the number of poems. It was originally just a collection of poems. However, since the Han Dynasty, Confucian scholars have regarded "The Book of Songs" as a classic, respectfully calling it the "Book of Songs" and ranking it as the first of the "Five Classics". The poems in the "Book of Songs" were originally composed of lyrics to music, and were divided into three categories: wind, elegance, and song according to the nature of the music originally set. "Wind" means local customs and folk songs, which are folk songs from various places. "Wind" includes folk songs of fifteen vassal states, namely "Fifteen Kingdoms Wind", with a total of 160 articles. It accounts for more than half of the Book of Songs. Compared with "Ya" and "Song", "Wind" appears lively and has a stronger flavor of life. For example, the opening chapter "Guan Ju" is about a young man who is falling in love for the first time. "Meng" writes about the sorrow of a woman abandoned by her husband. "The Quiet Girl" describes the subtle psychology of love. "Ya" means formal elegant music, which is orthodox court music. "Ya" is divided into "Daya" and "Xiaoya". There are 105 articles in one book. "Daya" is a ceremony used for grand banquets; "Xiaoya" is a ceremony used for ordinary banquets. "Song" is a sacrificial song, used in palaces and ancestral temples to worship ancestors, pray and praise gods. There are about forty chapters in existence.