Captain Zhang asks if the police station is a new building, or an old renovation. He asks if there is anything under the station, and the captain answers that there is, but he is not sure if it is on top of a prison or underground. The construction team has recently dug up a huge underground grave. The captain asks the construction team if they should stop digging, but the captain says that he will come right over and see what they have dug up. He tells the captain that he cannot let it out, and asks why they have brought the troublemaker with them. The police captain tells him that the woman told him that he dreamed of going back to hell and becoming abnormal, and that she asked him to come over to see him. He says that the police captain has asked him not to carry him back if he is injured, but that if he should be injured, he should not expect him to carry the captain back. He then asks why the power went out, why the machines stopped working, and why they dug up an unclean underground base. He explains that the underground base is similar to the one in 731, and he asks the captain why he brought him over to the site. He also asks why he hasn't answered his previous questions, and says that if the captain wants to know what he has done, he can go to the bookstore and ask for help. He adds that his work is for peace in the society, and if he ever has a difficult case, the captain can come there to find him.