The scene opens with the sound of a rustle. It is a cat calling for its master. The narrator explains that the cat master has been commanding the cats and guiding them to solve the severed finger case. He says that this person is too powerful to understand cat language and to communicate with the cats. The ability of this cat master is probably 10 times better than the narrator's. He asks the narrator to show him the results of the tests. The results show that the gas was turned off in the kitchen and that long zhang did not have many possessions in his apartment. He had only two or three shoes, which were piled haphazardly outside the door, and he had only ten pieces of clothes. He sounds like his younger brother. The group photo of his elementary school graduation and middle school and high school is also shown.