Why is The Book of Songs the source of the realistic tradition of China's classical literature?

1. The poem "Feng" in The Book of Songs reflects the life of the working people at the lower level of society and directly expresses their emotions and feelings, that is, the so-called "hungry people sing about their food, and the laborers sing about their food".

2. From The Book of Songs, the hungry sing about their food, and the laborers sing about their affairs, to the folk song of Yuefu in Han Dynasty, Cao Cao's ancient poems about Yuefu in Jian 'an era, writing current affairs through ancient poems, and the Tang Dynasty poet Du Fu's poems about Yuefu, which are "No Country to Rely on", and the new Yuefu movement advocated by Bai Juyi. China's literature always runs through a red line of realism, which makes him closer to life, shoulders the heavy responsibility of "the singer of the times" and has made brilliant achievements.

3. The Book of Songs has a far-reaching influence on the development of later poetry.

Therefore, The Book of Songs is the source of the realistic tradition of China's classical literature.