What are the main schools of poetry in the prosperous Tang Dynasty?

One of the main schools of poetry in the prosperous Tang Dynasty. It mainly describes the frontier fortress scenery and reflects the life of frontier fortress soldiers. Some frontier poems appeared in the Han, Wei and Six Dynasties, and the number increased continuously in Sui Dynasty. In the early Tang Dynasty, Sijie and Chen Ziang further developed it and reached full maturity in the prosperous Tang Dynasty. Gao Shi, Li Jie and Wang Changling are the most famous poets in this school, while Gao and Cen have the highest achievements. Others such as Wang Zhihuan, William Wang, Cui Hao, Liu Wan and Zhang Wei are also famous. Most of these poets had frontier fortress life experience, and they profoundly expressed frontier fortress life from all aspects, and also made some innovations in art. They not only described the magnificent desolate and colorful frontier fortress scenery, but also expressed their lofty aspirations and thoughts and feelings of inviting people to abandon their wives and children. Attitudes towards war are mixed, with curses and condemnations, and often reach a certain depth in thought. His poems are generous in emotion, rich in atmosphere and rich in artistic conception, and often take the form of seven-character poems and seven-character quatrains. Excellent works such as Ge Yanxing by Gao Shi and The Journey to the West by Cen Can. In addition, Lu Lun and Li Yi in the middle Tang Dynasty also had some desolate frontier quatrains.