Du Fu's poems reflect the historical process from prosperity to decline in the Tang Dynasty, which is called the history of poetry. For example, "Recalling the heyday of Kaiyuan, Xiaoyan still hides thousands of households. Rice is fat and white, and public and private granaries are rich. " Write about the prosperity of Kaiyuan Shi Sheng in the Tang Dynasty. "Although a country is divided, mountains and rivers still exist, and trees and grass turn green again in spring. Falling flowers like tears, lonely birds singing sad songs "lament the prosperity and decline of the Tang Dynasty.
Du Fu's poems profoundly reflect the rapid changes from prosperity to decline in the Tang Dynasty, and reproduce the social features before and after the An-Shi Rebellion, with rich social content and distinctive characteristics of the times.