"Deng Gao" is a seven-rhyme poem written by Du Fu in Kuizhou in the autumn of the second year of Dali (767). The first four sentences describe the scenery, recount the experiences of climbing high, closely follow the seasonal characteristics of autumn, and depict the empty and lonely scenery of the river. The first couplet is a partial close-up view, and the chin couplet is an overall distant view. The last four sentences are lyrical, describing the feelings of climbing high. They revolve around the author's own life experience and express the sadness of being poor, old and sick, and living in a foreign country. The neck couplet is self-inflicted, revealing the metaphorical, symbolic, and suggestive meanings contained in the description of the scene in the first four sentences; the last couplet makes another statement and ends with the self-image of decline and illness. The language of this poem is concise, with parallelism throughout, and even one or two sentences that are paired within a sentence, which fully demonstrates that Du Fu's grasp of the rhythm and rhythm of poetic language has reached a state of perfection in his later years. Difficulty: refers to both the fate of the country and one's own destiny; downfall: decline and frustration. This refers to aging, sickness, and lack of ambition. Therefore, the sentence "hardship hates the frost on the temples, and the wine glass becomes muddy when the new wine is broken" shows the poet's concern about the fate of the country and his own destiny.