How did poetry develop in the form of social miscellaneous sharp?

Under the complicated and sharp social contradictions, the realistic trend of thought in poetry creation has formed a magnificent situation. After the An Shi Rebellion, Yuan Jie and Gu Kuang's poems exposing social contradictions became Du Fu's homophones. In the middle Tang Dynasty, Bai Juyi, Yuan Zhen, Zhang Ji and Jincon inherited the tradition of Du Fu, and further advocated that "articles should be written in time, and songs and poems should be written for things", which set off a new Yuefu movement. Their new Yuefu poems exposed the arrogance, extravagance and cruel exploitation of the ruling class, expressed sympathy for the people's deep suffering and were deeply disturbed by the weakness of the country. Their poems had a wide and far-reaching influence at that time. In addition to the realistic school of poetry headed by Bai Juyi, there are more styles and schools of poetry in the middle Tang Dynasty than in the prosperous Tang Dynasty. Liu Changqing's and Wei's landscape poems and Li Yi's and Lu Lun's frontier poems all echo the poetic style in the prosperous Tang Dynasty. On the occasion of Zhenyuan and Yuanhe, Han Yu and Meng Jiao created a new poetic style with their excellent poetic style. Li He, a young poet, combined the tradition of Chu Ci with the romantic fantasy of Yuefu, and wrote all kinds of spiritual anguish and pursuit with rich colors and unexpected imagination. Liu Yuxi's research on Bachu folk songs and Liu Zongyuan's expression of anger through mountains and rivers also have unique artistic achievements.