What schools of poetry emerged in the second decade of new literature?

The second decade of new literature (1927 ~ 1937) is usually called literature in the period of "Left-wing writers".

It shows that literary creation has reached a new ideological depth. Mao Dun's realistic representative works of this period, such as Midnight, Linjiabao and Rural Trilogy, as well as the creations of writers and groups such as Jiang Guangchi, Hong Shen, Tian Han, Ding Ling, Zhang Tianyi and Hong, and the creations of five martyrs such as the Left-wing League, the Northeast Writers Group and the Chinese Poetry Society.