What schools of poetry are there in Tang Dynasty?

First, according to the period, there are four schools: early Tang, prosperous Tang, middle Tang and late Tang. Secondly, according to the characters, there are three categories: classical poets, romantic poets and realistic poets. Chen Ziang was the representative in the early Tang Dynasty, Li Bai and Du Fu were the representatives in the prosperous Tang Dynasty, Wang Wei, an idyllic poet, and Cen Can, Wang Changling and Gao Shi, frontier poets. Middle Tang Dynasty: Bai Juyi Late Tang Dynasty: Li Shangyin and Du Mu. The Tang Dynasty is the prosperous period of China's poetry, and its styles and schools are varied and colorful. For example, Wang Wei's pastoral poems are quiet and beautiful, Li Bai's poems are unrestrained and elegant, Du Fu's poems are depressed and frustrated, Bai Juyi's poems are popular and simple, and Li Shangyin's poems are exquisite and beautiful. It is a portrayal of the poet's character, temperament, experience and accomplishment. The establishment of the Tang Dynasty ushered in the first stage of poetry development. Most of the poems in the early Tang Dynasty contained the elegance of the Southern Dynasties that lacked true feelings. During the period of Wu Zetian, Yang Jiong, Lu and Luo, known as the "four outstanding poets", expanded the scope of expression of poetry, and then formally formed some broad-minded, broad-minded, rhythmic and graceful Tang poems.