Du Fu is a great realistic poet: he lived in the historical period of the Tang Dynasty from prosperity to decline, reflected the social reality at that time with a lot of pen and ink, turned his personal frustrations into deep concern for the fate of the country and the sufferings of the people, and became a "poet saint". During the period of Anshi Rebellion from prosperity to decline, "Ten-year Shogunate Mourning the Qin Dynasty" is exactly the poet's summary of ten-year shogunate life when he saw the fatuity of the court, the chaos of the country and the sufferings of people's livelihood. "A roll of Tang poetry to make up for Sichuan style" points out that the poet hopes to express his feelings with a roll of "Autumn Wind Breaking the Cottage Song", hoping that "I can freeze to death alone" and realize the wish that "there are thousands of buildings in Qian Qian, and all the poor people in the world are happy". It shows the poet's broad mind and spirit of self-sacrifice, and realizes his ambition to go to Chang 'an to "purify the customs again".

During the Tianbao period of Emperor Xuanzong of the Tang Dynasty, he was arrogant and ignored political affairs, and was in power in the name of traitors. I saw with my own eyes the tragic scene of the Anshi Rebellion against the Tang Dynasty, the fall of Tongguan, the corpses everywhere, the chaos in Chang 'an, the people fleeing and the desolate countryside.