The carved pipe runs through all the plots of the novel, which makes the work structured; it is the link connecting the two characters, the painter carves the pipe, presents the pipe, and repents for the pipe; the flower grower appreciates the pipe, accepts the pipe, and holds the pipe in his mouth before his death. The most beautifully carved pipe should belong to the person with the most beautiful heart, and the painter's remorse shows the author's reexamination of the pure beauty of human nature and the weakness of human nature.