When Du Fu wrote this poem, the Anshi Rebellion had ended for four years, but local warlords took the opportunity to compete for territory with each other, and the society was still in chaos. In this situation, he had to continue to "wander in the southwest between heaven and earth" and struggle with the sigh of "harmony for one year". The hardships of the times, the hardships of the family, personal illness and unfulfilled ambitions, and the successive deaths of friends Li Bai, Gao Shi and Yanwu-all of these are always lingering in his mind like thick clouds, and he took to the stage because of illness.
It is clear that the feeling of "sad autumn" comes from the troubles of being in a foreign land all the year round, the feeling of loneliness in old age, and the national disaster, family troubles, increased white hair and unpaid ambitions brought about by war. Poetry shows us the image of a poet who cares about the country and the people and hurts the country and the people.