When Ouyang Ping and his entourage walked to the bend of the stairs, they saw Men Qiusheng and his son Men Haoran preparing to go up the stairs - Men Qiusheng was holding an umbrella in his hand, and water was dripping under the umbrella.

"Master Men, do you have something important to say?"

Men Qiusheng took four steps and two steps, and walked up the stairs: "Captain Ouyang, my son Haoran has something to say to you—he remembered something. ”

Everyone walked into the room with the father and son in their arms.

Ouyang Ping pulled Men Haoran to the edge of his bed and sat down: "Haoran, what do you want to tell us?" ”

"Uncle policeman, I know who installed the computer for Mr. Ma's house."

"Who is it?"

"Yes—it's Mr. Li."

"Teacher Li?"

"It's our math teacher."

"In addition to your math teacher, which class does your math teacher teach?"

"Teacher Li also teaches four (3) classes, which is Chen Qidi's class."

Everyone was stunned. The Teacher Li in Men Haoran's mouth is the Teacher Li that Ouyang Ping and his party met in Teacher Xia's office. In the past, there was a sense of coming together from the scattered and seemingly unrelated information.

"In addition to teaching mathematics, is Mr. Li also proficient in computers?"

"Yes, Mr. Li understands computers - he is in charge of the computer room in our school."

"How did you know that Mr. Li installed a computer for Mr. Ma's house?"

"That morning, during recess, I went home to get the dictionary, and I followed Mr. Li -- I watched him enter Mr. Ma's house."

A fox can't keep its tail tightly clipped forever, and if you're not careful, its tail will be exposed.

"Did Mr. Li see you?"

"No, I'm far away from him. I saw him walk into Mr. Ma's house before going upstairs. ”

"Why is that?"

"I'm afraid of him."

Everyone was a little puzzled.

"Why?"

"My classmates are afraid of him."

It should be normal for students to be afraid of teachers, and some teachers are more strict with students.

"Is Mr. Li fierce?"

"Teacher Li is often sick."

There seems to be no inevitable connection between "Teacher Li is often sick" and harshness.

"What is Mr. Li's illness?"

"I don't know. Every time he got sick, he had to go home and recuperate for a few days. ”

"Didn't he ever go to the hospital for treatment?"

"No, once, Mr. Li was sick, and my classmates wanted to visit him in the hospital, but Mr. Xia said that Mr. Li went home to recuperate, and a few days later, he came to work again."

"Teacher Xia doesn't know what kind of illness Teacher Li has?"

"Teacher Xia didn't know, originally Teacher Xia wanted to take us to Teacher Li's house to visit him, but Teacher Li's family camped in the black camp far away, and there were no cars, and we had to cross two ferries, and the traffic there was very inconvenient, so we never went there."

"So, did Mr. Li ever get sick in class?"

"Every once in a while, Mr. Li will go home and rest for a few days."

"What are the symptoms? What does it look like when it happens? ”

"His eyes were straight, he walked back and forth, his voice suddenly became very high, his face was ugly, and at the worst time, he suddenly stopped lecturing, let us write our own homework, and then didn't say a word."

Mr. Li's illness is very special.

"Did Mr. Li ever sell computers to his classmates?"

"Pitched."

"Did he sell you computers?"