What tradition did The Book of Songs create in China's poetry?

The Book of Songs is the first collection of poems in China, with a total of 305 poems from the early years of the Western Zhou Dynasty to the mid-Spring and Autumn Period (there are 6 other poems by Xiaoya, which are not counted), so it is also called "300 poems" with Shangshu, Book of Rites, Zhouyi and Chunqiu. There are more than 300 ancient poems, which are related to Confucius, but not important ... "(Historical Records? 6? 1 Confucius' home), it is said that it was compiled by Confucius. Formerly known as "Poetry", it was regarded as a classic by Confucian scholars in the Han Dynasty, but it was called "The Book of Songs", also known as "Poetry 300". He initiated the excellent tradition of realism in China's ancient poetry creation.