In couplets, poets write about themselves from couplets to Dongting Lake, which spans from small to large. In the scene, it jumps from the ground of Wu and Chu to the sky of the sun and the moon. When the scene is in harmony, the poet stands on Yueyang Tower and looks to the southeast, only to see the vast Dongting Lake with no end in sight, while Wu is pushed to the Far East and Chu is pushed to the southwest, lamenting the vastness of the universe, while the poet's smallness is linked with his ambition and talent.
The two sentences on the necklace, "I have no relatives and friends, but I am old, weak, sick and lonely", are the poet's situation, a portrayal of Du Fu's life in his later years, and an expression of his feelings: it is difficult to pay for his ambition, but it is not timely.
Tail League refers to the invasion of Tubo at that time, which threatened Chang 'an, the war continued, and the country was restless. Du Fu leans against the window of Yueyang Tower and looks north. Although he can't see Chang 'an, he can't see the road through which the war passed, but in his mind, he presents a picture of Tubo invasion, Chang 'an crisis and people's suffering. The poet's eyes filled with tears. Expressed the author's concern for the country and the people.
Abstract: This poem is an impromptu lyric work. In his works, the poet described the spectacular scene of Yueyang Tower, reflected the unfortunate experience of the poet in his later years, expressed his feelings of worrying about the country and the people, and lamented the vastness of the universe and the smallness of the world.