In this chapter, the fourth and fifth students discuss the significance of the "shang-yang valley," a symbol of gratitude. The fourth student explains that the valley is just a token of appreciation, and that he's just "mumbling around." He's not sure what the meaning is, but he knows that the girl is all by herself. He asks the fourth student to forgive him if he has offended him in any way. He explains that he has heard about sparrow troops, a group of soldiers who are "masters of concealment" and "swift as lightning." They have no chance against them, he says, because the terrain is open, and they're secretly "hitching a ride." They're going to hitch a ride, and if they get caught, it will be disastrous. They'll have to teach the driver how to navigate the terrain, and then they'll need to hand the carriage over to the driver. He says that the terrain will be open once the terrain has been released, and he fears that it will "run everywhere" and that it'll "hard to control." He tells the students to eat some sugar cane, which is already being eaten by the people at the valley. He also tells them that the third student is always working hard, and the master is always praising him. He tells them to leave it to him, because he'll learn from them. He goes on to explain that the purpose of the trip is to find the "hua-she escaped" , and