In terms of language, Du Fu's poems are generally regarded as "gloomy", with rich changes in language and text structure, and emphasis on wording and sentence making. The word "depressed" was first seen in the Southern Dynasties. "If you are depressed, the sun and the moon are beautiful" [24]. Later, Du Fu wrote the word "depressed and frustrated", which accurately summarized the language of his works. "As for those who are depressed and frustrated, they are always agile, while those who are heroic and beautiful are ordinary." [25]. Further research on 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 is already absolute beauty, and he was ambitious when he was young. "Once you reach the top, you will see that other mountains are dwarfed under the sky." [26]. Later, the Anshi Rebellion broke out, the national movement declined, and the official career was ruined. The great gap between ideal and reality has also caused great changes in Du Fu's poetic style, approaching realism. [26]