The word "depressed" was first seen in the Southern Dynasties, which means "the body is depressed and thoughtful, and the sun and the moon are beautiful". Later, Du Fu wrote the word "depressed and frustrated", which accurately summarized the language of his works. "As for depression and frustration, he is always agile, while people in Yang Xiong and Gomez are ordinary." A further study of Du Fu's poems shows that the formation of his poetic style is closely related to his adherence to Confucianism. At the same time, Du Fu was at the end of his heyday. When he was young, he was ambitious. "When you climb to the top, you will see that other mountains are short under the sky." . Later, the Anshi Rebellion broke out, the national movement declined and the official career was unlucky. The great gap between ideal and reality has also caused great changes in Du Fu's poetic style, approaching realism. The individualization of image selection in Du Fu's poems is the basis of his language.
Du Fu was a great realistic poet and world cultural celebrity in Tang Dynasty. Du Fu was the foreign minister of Zuo Shiyi and the proofreading department, so he was later called Du Gongbu. Du Fu lived in the historical period from prosperity to decline in the Tang Dynasty, and his poems mostly involved social unrest, political darkness and people's sufferings. His poems reflect the social contradictions and people's sufferings at that time, so they are called "the history of poetry". Du Fu is concerned about the country and the people, with noble personality and exquisite poetic skills. Du Fu wrote more than 1500 poems in his life, many of which are famous works that have been handed down from generation to generation, such as Three Officials, Three Farewells and Du Gongbu Collection. Among them, the "three officials" are Shi Haoguan, Xin 'an official and Tongguan official, and the "three farewell" are newly married, homeless and resigned. Du Fu's poems were the most widely circulated in the Tang Dynasty, and he was one of the most outstanding poets in the Tang Dynasty, which had a far-reaching influence on later generations.