Please briefly explain the emergence of kuya Poetry School from three aspects: historical background, cultural background and the history of poetry development.

1. After the outbreak of War of Resistance against Japanese Aggression, social life and war scenes became the objects described by poets, and realistic poems represented by Ai Qing matured, and modernist poets such as He Qifang began to look to the society.

2. The emergence of historical consciousness is reflected in the prose of poetry, especially the addition of narrative, satire, drama and other factors, which makes the style of poetry expand and the forms of expression more diversified.

What prevailed in the 1930s? Modernist? Although poetry has withdrawn from the world of poetry, the exploration of modern poetry has not stopped. The way Bian, an old modernist poet, dealt with reality and history provided a good experience for a new generation of modernist poets, which contributed to the emergence of the Nine Leaves Poetry School.