1), the number of poets and works is much more than that in the prosperous Tang Dynasty.
2) Pursuing new changes. Poetry reached its peak in the prosperous Tang Dynasty, and it was extremely difficult to last. Poets in the middle Tang Dynasty had to find another way to pursue new changes. Just as Bai Juyi said, "Poetry reaches Yuan, but the style becomes new" ("I will give it back to you before I finish adding six rhymes to my thoughts". Borrowing, actual white finger singing and long method)
3), diversification. Different poets and creative groups have different pursuits for new changes, which leads to the diversification of poetry creation. Its performance is that the creative personality is more distinct and prominent, and the styles and schools are more diverse.
There were about 570 people in the middle Tang Dynasty, with the largest number of poems, about 1.9 million, and the largest number of poems, so it was high. Known as the "Renaissance in the Middle Tang Dynasty". Compared with the period of An Shi Rebellion, although the situation was relatively stable, the separatist regime of the vassal regions, the autocratic power of eunuchs, factional struggles and increasingly sharp class contradictions plunged the society into a serious and inevitable crisis. In the prosperous Tang Dynasty, the enthusiasm and ideal of positive romanticism ebbed, and the grim and cold reality forced the poet to tend to observe and think calmly, so poetry turned to the road of realism. The maturity and perfection of poetry in the prosperous Tang Dynasty also posed a new challenge to the poets in the mid-Tang Dynasty in their innovative development of poetry art. Therefore, the poetry in the mid-Tang Dynasty was innovative in both content and art, and the creation of poets and schools was "like a dangerous peak, drifting in a deep stream, but selfish and not following each other" (Selected Poems of Hu Yinglin, Volume IV). There are roughly the following schools of poetry in the middle Tang Dynasty:
(1) led by Bai Juyi and Yuan Zhen, including Li Shen, Wang Jian and Zhang Ji, advocated the creation of a new Yuefu, demanding that "songs and poems should be combined, and articles should be written according to the times and events", exposing all kinds of social and political abuses in the middle Tang Dynasty, reflecting the disadvantages of the times and the diseases of the people, and only requiring simple and popular poetry forms. Naturally, their creation was produced at that time or even later.
(2) A group of poets, represented by Han Yu and Meng Jiao, set out from their strange and subjective creative ideas and devoted themselves to exploring new artistic forms of poetry, reflecting the darkness of society through their personal experiences. Besides, there are other poets in this school, such as Liu Che, Lu Tong, Ma Yi, Jia Dao and Li He, among which He Li is the most prominent.
(3) Before Han, Meng, Yuan and Bai, there were poets such as Liu Changqing, Wei and Dali, who expressed their interest in secluded life in the mountains with their attachment to the prosperous Tang Dynasty and their gloomy and cold mood.
(4) Liu Zongyuan, Liu Yuxi and other "Yuanhe was relegated" poets, or expressed the anguish of relegation through foreign landscapes, or expressed their lament through historical sites. Liu's landscape poems are light and beautiful, solemn and exciting, while his epic is heroic and long.