What are the characteristics of Gao Shi's poems?

Gao Shi is the leader of the frontier poetry school in the prosperous Tang Dynasty, and "vigorous and solemn" is the remarkable feature of his frontier poetry. His poems are quality-oriented, magnificent and simple. Lofty and lonely, he has the spirit of a ranger. He once roamed Liang and Song Dynasties and devoted himself to self-sufficiency. In addition, he is generous and upright, so his poems reflect a wide range of aspects and profound themes. Gao Shi's psychological structure is extensive, and his personality is straightforward, so his poems often express his mind directly, or talk to each other, and rarely use metaphors. For example, "Ge Yanxing" points out the national disaster at the beginning, highlighting the tense atmosphere: "The northeastern border of China is dark and filled with smoke and dust. In order to repel the barbaric aggressors, our generals left their homes"; Finally, he said, "I heard about the battle in the desert today, but it's Li Ye!" There are both ardent expectations and deep sighs, which are implicit and powerful.