What achievements have been made in the development of poetry in different periods?

In the early stage of poetry development, textual research scholars flaunted Chinese studies in order to be different from Zhu Cheng Neo-Confucianism, which originated in the Song Dynasty. Later, it was more about reconciling the theory of Han and Song Dynasties. They further summarized the academic and literary achievements of their predecessors and served the feudal ruling class at that time. Under the influence of this atmosphere, the tendency of retro in literary creation is more serious, and only novels have achieved high artistic achievements. Wang Shizhen's "verve theory" still had a great influence in the poetry circle in the middle of Qing Dynasty. Shen Deqian, who advocates "gentleness and gentleness", is a typical Taige poet. Later, Weng Fanggang's theory of "texture" showed the influence of textual research on poetry. Only Yuan Mei's theory of opposing retrospection and advocating natural spirit inherited and developed the tradition of the public security school in the late Ming Dynasty. His theory of "soul" was not as abstract as that of the public security school, but based on reality, which was relatively progressive at that time. Zheng Xie's poems can not only break through the shackles of retro-ism, but also write some poems that sympathize with people's sufferings. Fang Bao, Liu Dakui and Yao Nai of Tongcheng School have always influenced the literary world in the late Qing Dynasty. Because the literati read more ancient books and remember more ancient things, there has also been a situation of "revival" of parallel prose, which is the opposite school of Tongcheng School, and Wang Zhong has made great achievements in this respect.