Although the passage of time is shorter than outside, Shu's blood circulation is stagnant, and he is unable to increase his cultivation. He tells himself that the rats from the school of dream have come to fight with him, and that he will take revenge on them. Shu says that the best herb to cure a fracture is bone--healing grass from Cangman mountain, but white grade herbs are often guarded by demons that can swallow human beings. He decides to run away to the north of the mountain.