Without further ado.

During self-study that night, Yi Qing called Xiao Wei to the security department alone to talk.

Because it was a very secret conversation, Yi Qing did not come forward in person, but asked Situ Chunyan to call Xiao Wei out, and deliberately avoided others.

Since it was night, Xiao Wei was deliberately arranged, so there was no one else in the security department except for the two of them.

Yi Qing asked straight to the point: "Xiaowei, you tell me the whole story of your affairs that day again." ”

Xiao Wei didn't understand what was going on with Yi Qing, so he asked and asked. However, since Yi Qing naturally had a reason to ask, Xiao Wei still answered the question honestly.

"It looked like it was about eight o'clock that night. My classmate Lin Guohong and I went to the school's laboratory building to play, the main entrance of the laboratory building was locked, but although the side door on the other side was also locked, it was just with that kind of lock, leaving a relatively large gap, if you are not fat, you can drill through. ”

Speaking of this, Yi Qing suddenly interjected: "What a big gap is it, what kind of person can get through? For example, can Shi Mingkai do it?"

Xiao Wei thought for a while and said, "The door is very high, so as long as you are not fat, you can do it." I can drill through, Shi Mingkai should be able to do too, let alone girls. ”

"Okay, you go on. ”

"Once inside, we went up to the second floor in the dark, only to find someone in a room on the second floor. It's Shi Mingkai and Jiang Lina."

"How do you know it's the two of them? Do you see their faces clearly?" Yi Qing asked.

"I didn't see the face, they, they were hugging each other, so I didn't see the face. But Shi Mingkai is our teacher, and Jiang Lina is our classmate, so listening to the voice and looking at the back can be easily recognized, and it will never be wrong. Xiao Wei said with certainty.

"And then?"

"Later, we were afraid that they would find us, so we ran to the corner at the other end of the corridor and stayed there for a while. Saying this, Xiao Wei's face turned red, and he remembered the moment when he and Lin Guohong were ecstatic.

Yi Qing also saw Xiao Wei's subtle changes, and he knew very well what Xiao Wei and Lin Guo were doing in the experimental building that day. The little bit of the young boy and girl who first knew the details of personnel, he didn't plan to get to the bottom of it.

"How long have you been there?" Yi Qing asked.

"I didn't look at my watch at the time, and it didn't take long, but it was only about ten minutes. Xiao Wei replied thoughtfully, but in fact, he was at a loss in his heart. At that time, I was patronizing and experiencing the moment of ecstasy, how could there be any concept of time, and the exact time was really uncertain.

Xiao Wei didn't expect the Public Security Bureau to ask so carefully.

"Later, we heard someone coming downstairs and ran away. ”

"Where did you run from?"

"It's still from the side door. ”

"And what about the guy you heard?"

"I didn't see the man, I only heard him coming upstairs, so we took the opportunity to run away. ”

"Where did that guy come from?"

"Then we don't know. At that time, I was very nervous, for fear of being seen, and I didn't pay attention to whether the main entrance was open, or I chose to go out through the side door. The side door is still locked with a chain lock. ”

"Oh," Yi Qing held his chin in his hand and looked at Xiao Wei thoughtfully. Xiao Wei also looked at Yi Qing with curious eyes.

"That's it, Weizi. Although you didn't see that person, it is certain that there was indeed a person who entered the experimental building, and at that time, that is, when he came in, Shi Mingkai and Jiang Lina were still in the room, and Jiang Lina must be alive?"

"Of course. I didn't know anyone was coming until I saw the lights in the hallway on the first floor, and then I heard footsteps," Xiao Wei replied.

"That's the case, who is that person who came in?" Yi Qing seemed to ask Xiao Wei and seemed to be talking to himself.

"I really don't see that. At that time, I was so scared that I was afraid that I would be seen, how could I dare to see who the person was. However, listening to the footsteps should be a man, and not a young man. Xiao Wei said.

"Why?" Yi Qing asked.

"I heard the man's footsteps very steady, and the footsteps were heavy, not like the sound of a young man walking, it should have been an older man, and it must have something to do with the school personnel. Xiao Wei analyzed.

Yi Qing felt that what Xiao Wei said made sense, and then asked, "Where did you go when you came out?"

"We just sat outside the lab building, gasping for breath. After a while, I saw the window of the room on the second floor open, and then Shi Mingkai jumped down from the stairs. At that time, Jiang Lina also poked her head out of the window to look. ”

"You read that right, it must be Jiang Lina?"

"I can't be mistaken, not to mention that Lin Guohong also saw it, that is Jiang Lina. Xiao Wei said with great certainty.

Yi Qing pondered for a while, and then said to Xiao Wei: "Xiaowei, you go back first, I'll look for you if there's any situation." ”

Seeing Xiao Wei away, Situ Chunyan walked in.

Looking at Yi Qing, who was at a loss, Situ Chunyan asked, "The case still has no eyebrows?"

Yi Qing shook his head and said in a somewhat self-deprecating tone: "It's time for us to carry it back, as soon as we came up, we encountered such a tricky case." ”

Situ Chunyan said with leniency: "You don't have to worry too much, it's useless to complain about people here, it's useless to get angry in a hurry, you have to calm down and think about it." Why don't you have more people in your bureau?"

Yi Qing smiled, he took a deep breath, clenched his fists and rubbed vigorously: "There is no complaint, I think this case is getting more and more interesting now." ”

Yi Qing was born with this kind of character that became more and more courageous the more he fought, and he never admitted defeat.

Seeing that it was not early, Yi Qing said, "Let's go, I'll send you home." ”

Sending Situ Chunyan home, Yi Qing returned to the bureau again, sitting alone in the office in a daze, thinking about this case all the time.

Since I went to the laboratory building at night, it should be the people in the school. If it's an adult, it shouldn't go through the crack of the door, it should be with a key,

The keys to the door of the laboratory building have been investigated, and there are two. One is held by Lao Li at the gate, and the other is in the school's general affairs department.

Lao Li is over sixty years old, this kind of thing should not be done, and it has been investigated and checked, Lao Li was not on duty that day and went home.

Another one is in the General Affairs Division.,That day, after the school holiday, the people in the General Affairs Section went home.,The key is still in the office.,Usually when there's a class.,Take the teacher to talk about it.,The people from the General Affairs Section go to open the door.。

The key to the general affairs department was kept by an eldest sister, and that day after the eldest sister's recollection, because there was no experimental class, she didn't open the door of the experimental building all day, and the key was still well kept by the eldest sister.

This eldest sister? Yi Qing smiled when she thought of this, this kind of case must be ruled out first.

Is there anyone who has the key to this gate, which we don't know? This is possible, and it needs to be investigated more deeply, and I am afraid that such a clear and large-scale investigation will not work.

Yi Qing extinguished the cigarette butt in his hand, picked up the teacup and wanted to drink water, but found that the teacup was empty. He casually shouted, "Is there anyone outside?" ”

A young man who pushed the door outside and came in: "What's the matter, Captain Yi?"

"Oh, there's no water, get me some water. ”

The young man agreed, picked up the kettle and went out to fetch water.

The young man's name is Wang Tao, he is just 20 years old this year, he is a graduate of the police academy who has just been assigned to the serious crime team, and because his home is not from Pengcheng County, he lives in the duty room of the unit.

Wang Tao has a very childish looking face, looking younger than his actual age, and Xiao Wei is quite like the same age.

After a while, Wang Tao came back from fetching water. Yi Qing looked at Wang Tao's childish face, and suddenly had an idea, and thought about it.

Yi Qing stopped Wang Tao: "Wang Tao, come and sit down, I'll tell you something." ”