Subtitle 1: The first couplet describes the environment of "sleeping alone", and exaggerates the desolate and cold atmosphere through the delineation of scenery such as "Qingqiu", "Jingwu" and "Wax Torch". The couplet writes about what he heard and saw in "Sleeping Alone". The sound of horns sounded sadly in the long night, and the moonlight was infinitely beautiful, but there was no one to appreciate it, so he stayed alone without sleep, which expresses the poet's complex mood of depression and depression. The neck couplet and the tail couplet directly express the poet's worries about state affairs and concern for his relatives in his hometown when he was "sleeping alone", and express his unwillingness to be temporarily settled in the shogunate.