The poet came to the yard and the rooster crowed in the distance. Look at the sky, the waning moon is still high in the dark sky. I packed up and went on my way. The road was empty and quiet, and the slab bridge was covered with frost, leaving traces of pedestrians. The author selected some special scenery, such as the crow, the waning moon, Maodian, first frost and Banqiao, and vividly described a three-dimensional early travel map of the barren hills. The sad and lonely environment effectively sets off the hardships of travel and the depth of homesickness. Every word has an image. The implication is endless, and the antithesis is neat and the rhyme is harmonious, which is a famous sentence through the ages. Shen Deqian once spoke highly of it as "a famous sentence of leaving early".