1. Three or four sentences turn to the description of objective scenery. "There are ancient trees on the edge of the city, and autumn sounds day after day." For the poet, the sand dune city in front of him seems to have nothing to see except the old trees on the edge of the city, rustling day and night in the autumn wind. "This is the bleak autumn wind, and all the leaves are full of hatred."
2. I will send you to the south if I miss you, which shows the poet's deep affection for Du Fu.