"Is that all you've been through?" Xu Tian asked.

"That's pretty much it, I can't forget that cat all these years, I'm most afraid of seeing a black cat, every time I accidentally see a pure black stray cat, it scares me for days, and when I get the envelope from the cat, I have to do what it says." Tian Huizhen covered her face and sobbed.

"Did you see a cat come to your house with an envelope in its mouth?" Xu Tian asked.

"It's a pure black cat, the kind of apartment-style houses are basically small, usually when I'm at home most of the doors are open, that day is almost evening, I was cleaning up the house at home, when I turned around, suddenly there was a pure black cat with an envelope squatting in front of my house. When I looked at the cat, it dropped the envelope and ran away. Tian Huizhen said.

"You should have told the police about this from the beginning, how can I believe you if you say such irrefutable words now?" Xu Tian said suspiciously.

"I don't dare to say it, this kind of thing is terrible, even if I say it, can the police help me? And there was a page in that envelope that threatened me, if I publicized the black cat, then all the bad things I had done over the years would be proven by the police, so I didn't dare to say it. Tian Huizhen said.

"What's your handle? Have you sinned in the past few years? Xu Tian asked.

"I ...... Now I have to confess that I have been working in MLM since I quit my job in the school library. Tian Huizhen said.

"This kind of thing is not a crime to death, you can be so afraid of the black cat, but you don't have the courage to confess the truth to the police, the crime you committed must be more terrible than facing the black cat, you say that the pyramid scheme is fake." Xu Tianqiu asked.

"I ...... I ......" Tian Huizhen began to become incoherent.

"Speak up! Otherwise, no one will be able to help you. Teacher Jin said.

"It's okay if you don't say it, I've basically deduced what sin you've committed." Xu Tian said with a smile.

Tian Huizhen's heart tightened, and her hands on her knees grabbed her pants fiercely.

"You're not telling the whole story, but the truth is in the story you're telling, and the part that sounds ridiculous is the truth you're trying to hide." Xu Tian said.

"No...... I didn't ......," Tian Huizhen quibbled.

"Your two library colleagues are the sins you want to cover up, and it sounds ridiculous that you said that those two colleagues disappeared and that even the police didn't find them, and that's why you became afraid of the cat. If I'm right, those two colleagues were killed by you, right? Xu Tian said with a sinking face.

Tian Huizhen suddenly stood up from her seat as if she had been pricked by a needle, her nervous face became relaxed, the fear on her face began to turn into surprise, the wrinkled skin was piled up on both sides of her face, and the whole person looked like a different person.

"You buried those two people under the gym, so you're always scared to pass by there, and the more people there, the more scared you are of the two bodies going to be dug up, but the biggest worry is that there's a cat that suddenly appears in the place where you buried the bodies. You're afraid that cats will smell the carcass rotting, so you're scared, and you'll have to stand there every day after work and watch for a while, and when you go to work, you'll often walk to the south window of the library and look at the place where you buried the carcass. As the cycle continues, you become more and more scared, but you can't quit your job right away, and you quit your job at the library until the rumors have passed. After you quit your job in the library, you lived very comfortably for the next few years, but it wasn't until this summer that the cat suddenly appeared in front of you, so you didn't dare to go against the murderous plan of the old man, this is the truth. Xu Tian said.

"Xu Tian's speculation is all traceable." Teacher Jin took over the conversation and said. "As far as I know, the gym of the university was demolished and quickly converted into a vegetable field, which was originally intended to build a small three-story building for a chemistry laboratory, but at that time, the school suddenly lacked funds, so it rented out the land, but the person who rented the land was an old professor, it should be your mother, right?"

"Your mother developed a vegetable plot there to help you cover up the crime, and I think you were supposed to build a house there, but you didn't get approval, so you converted it into a vegetable patch. A retired professor cultivating a vegetable patch in the corner of the school sounds perfectly reasonable, but it would be perfectly reasonable if your mother did some more good deeds in the school. Xu Tian said.

"But your little abacus was discovered by others." Dr. Lim said.

"That's right, the person who found out about your crime is the girl who buried the cat, there was no story of that girl in the first place, and the girl couldn't have appeared before the school was built, it was all made up by you. The girl must have reported the crime at that time, and the police would have come to dig it up, but the police would have returned empty-handed, otherwise you would have been arrested a long time ago. Xu Tian said.

"You're so smart, there's nothing to hide, but that's what you say, but in the end you're wrong, the police didn't come, the girl...... That girl was also killed by me. Tian Huizhen said with a look of horror.

"Sure enough, you're the one who started it." Dr. Lim said.

"Dr. Na Lin must have been discovered by Tian Huizhen when he was investigating later, so he brought out those things later." Xu Tian said.

"No, I didn't find out, that girl ......" Tian Huizhen trembled and knelt on the ground. I killed the girl, and I killed her in her dormitory, which was the third-to-last dormitory in the left-hand hallway on the first floor. ”

"What? What did you do with the girl's body? Xu Tian asked.

"I didn't deal with it, I killed her and left the scene, I was ready to turn myself in, but there was no news in the school, as if no one had ever died. I was trying to figure it out before turning myself in, but when I got back to school, no one found out that there was a dead person in the dormitory, so I went back to the dormitory, and by the time I got back, the dormitory had become the dormitory for the lady on duty. Tian Huizhen said.