Li Dongting really reacted, his eyes that were originally drifting and dodging suddenly focused on Ouyang Ping's face, and he should be able to hear a little content from Ouyang Ping's words: "Yes, these two children are my students, one is in the third grade, and the other is in the fourth grade. Li Dongting spoke very slowly. Now, he can only follow Ouyang Ping's words.

"Is Lin Yali your student?"

Li Dongting's eyes never left Ouyang Ping's face, but his eyes showed some timidity and fear.

"Yes, Lin Yali is my student."

"On the evening of January 12th, Mr. Liu's family had a murder case, do you know?"

"This—no one knows this."

"After the incident, some teachers from Duolun Road Primary School went to the scene, are you at the scene?"

"I wasn't there, I heard it at the gate of the community when I was coming home from work, and there were a lot of people gathered at the gate of the community at that time."

"When did you go back to the community?"

"About half past seven."

"About half-past seven?"

"Yes, I usually go back to the community around half past seven."

"Where were you at the time of the crime?"

"I'm at school!"

"You should know that there is a murder in the neighborhood at school - at least you should hear it, and since you're at school, you should be able to hear it."

"I was in the school's computer room, that day, the school's computer room had a little malfunction, and the next afternoon there was a computer training, and the school leaders asked me to make sure to do a good job of preparation before the training - you don't know, in addition to teaching mathematics for two classes, I am also responsible for the management of the computer room and the training of teachers every week."

Li Dongting's activity trajectory between 4 and 5 p.m. on January 12 was a key link in the entire case.

"Where are you between four and five o'clock in the evening of January 12th?"

"Didn't I just say that? That afternoon, I had been in the school computer room, and I didn't go there. By the way, before half past three, I was in the office to prepare for a while, so you can go and ask Mr. Hong, who was in the office at the time. Later, Secretary Wang from the office came to ask me if the fault of the microcomputer room had been eliminated, so I put down what I was doing and went to the microcomputer room. Secretary Wang also went to the microcomputer room with me to see that I was busy for a while. ”

"When did Secretary Wang leave?"

"Secretary Wang stayed in the computer room for a while, and I can't say for sure how long, because I didn't pay attention - I don't need to pay attention to when he leaves. You can ask Secretary Wang, and he may be able to remember. I just want to tell you that on the afternoon of January 12th, after half past three o'clock and until half past seven in the evening, I was in the computer room. The computer room is upstairs in the library, not in the teaching area, and I don't even know what's going on inside the school, let alone what's happening outside the school? So be it! You can go and ask the doorman Gong, whether I walked out of the school gate, he should be able to remember, when he gets off work, there are more teachers, he may not pay special attention to me, there are few teachers who leave the school before work, Master Gong should be able to remember. ”

"According to you, between about four o'clock and five o'clock, you are the only one in the computer room?"

"Yes, that's right."

"Can anyone prove that you stayed in the computer room during this time?"

"No one can prove it."