On the surface, how can you sigh while walking and immerse yourself in sadness repeatedly? In fact, it is the poet's frustrated experience, which produces complex emotions such as melancholy, unhappiness, loneliness and loss in the poet's consciousness, which is difficult to control and must be vented in poetic language. As for the latter, it affirms people's inner "feelings" more directly and unabashedly, indicating that the author tried to dispel and suppress this negative emotion at first, and finally found that the more depressed he was in the process of walking, the greater the intensity of negative emotional attacks, so he simply used it.