The Book of Songs is China's first collection of poems, which collected 305 poems from the early Western Zhou Dynasty to the mid-Spring and Autumn Period. The pre-Qin people called The Book of Songs "Poetry", or "Poetry 300" or integer "Poetry 300". In the Western Han Dynasty, it was revered as a Confucian classic, called The Book of Songs, which is still in use today. The Book of Songs was written in the Spring and Autumn Period, and was taught by Qi (Shen Pei), Lu (Mao Heng), Han (Han Ying) and Mao (Zhao Renmao) in the Han Dynasty. After the Eastern Han Dynasty, Qi, Lu and Han were all lost, leaving only the Biography of Mao Poetry. Mao poetry prevailed after the Eastern Han Dynasty and has been passed down to this day.