"Lin Yunzhu confessed to you?" Xiao An's tone was very gossip.

"No." Ying Xingrong's mood swings passed quickly, like a well-defended clam that opened its shell and closed it again immediately, he said, "She just admires me and trusts me more. As I said before, her family background is not very good, and she has a sensitive personality, so she will always remember your kindness to her."

After that, Ying Xingrong didn't reveal more things, and Xiao An felt very sorry.

But in front of Cheng Jin, she still "bragged" about how perfectly she and You Duo cooperated.

You Duo is very embarrassed.

"I'll listen to the recording later, tell me the summary first." Cheng Jin said.

Xiao An: "Teacher Ying does have a preference for Student Lin, but he does not admit that he has a relationship with Student Lin that goes beyond a teacher-student relationship, but he implicitly admits that Student Lin has developed an admiration for him."

"In addition, Ying Xingrong's family should not be very harmonious. When he talked about his son, he was a little cold. The relationship between father and son should not be close." You Duo added.

Xiaoan continued: "Family disharmony means that the probability of cheating is higher, which means that Ying Xingrong has a higher probability of seeking comfort from others, but he should not look for his own students when he is looking for anyone."

"Does his son know the rumors about his teacher-student relationship with Lin Yunzhu?" Han Bin asked.

"I don't know, do you want to talk to his son again?" You Duo looked at Cheng Jin.

"There are more and more thread ends." Yang Simi, who was leaning against the railing, answered casually.

Cheng Jin thought for a while, and said, "I feel like I need to pull this thread. Find out how tall Ying Xingrong's son is, and where Lin Yunzhu was when he fell from the building."

Xiao An clenched her fists: "Oh! If Lin Yunzhu committed suicide, then Teacher Ying's son had a motive for committing the crime—resenting her for destroying his family. Then let's investigate right away?" She looked at You Duo, "Let's go?"

You Duo looked at Cheng Jin.

Cheng Jin nodded: "You go."

"Then let's go!" Xiao An was about to leave, but stopped immediately, "Oh, I almost forgot to ask, boss, why are you on the fifth floor again?"

Cheng Jin: "I just came up to take a look again, but I didn't expect Han Bin to find a suspected new clue. Now we are waiting for people from the technical laboratory to come and inspect the scene."

"What new clue?" You Duo asked.

Han Bin talked about the situation and asked, "Do you still remember what the interior of the room you saw was like?"

You Duo walked to the window with Xiao An to look inside the room, and after taking a look at him, he said: "The floor looked like this yesterday, but I didn't think much about it at the time..." He was a little depressed.

Xiao An turned back: "What does this discovery show?"

Cheng Jin: "The school said that no one has been in this room recently, and the person who keeps the key also said that the key has not been touched, so someone must have entered the room illegally. Judging from the traces of dust, the things in the room have not been moved. , so the other party didn't come here to steal things, he should have entered the house to hide, so as not to be seen by people in the corridor."

"That is to say, someone hid in this room before Lin Yunzhu fell from the building?" Xiao An asked in surprise.

"There's that possibility."

Xiao An: "This man must be the murderer! He secretly hid in the room, and then took advantage of Lin Yunzhu's unawares to come out of the room and push her downstairs. This is a murder case!"

"No," Yang Simi answered, "Your boss thinks it's an impulsive killing."

"No," hearing Cheng Jin's denial, Yang Simi looked up at him dangerously, and Cheng Jin continued, "It may also be impulsive suicide."

Yang Simi looked at Cheng Jin intently, but he didn't see any signs of Cheng Jin deliberately "playing" with him, so he didn't "explode".

Han Bin thought that Cheng Jin was teasing the cat on purpose. Before Xiao An and You Duo came, he was forcibly stuffed with a lot of dog food. Now he thinks that these two people can do anything.

Xiao An was puzzled: "Why did you kill or commit suicide impulsively?"

Cheng Jin: "The height of the fifth floor is a bit low, so there is no guarantee of death."

Xiao An understood: "Oh, if you have carefully considered how to commit murder or suicide, you will choose a more suitable location. Since it is not murder, what is this person trying to do in the room?"

You Duo looked at the window of the room and said, "Hide and observe the people in the corridor outside?"

"Oh...then I have a guess," Xiao An said, "The situation at that time may be like this: Ying Xingrong and Lin Yunzhu made an appointment to meet on the fifth floor. He hid in the room in advance to catch the adulterer. Later, when he confirmed that Ying Xingrong and Lin Yunzhu had an improper relationship—for example, seeing them hugging, he was very angry, so after Ying Xingrong left, he took advantage of Lin Yunzhu's absence. Bei pushed her down the stairs—an impulsive murder."

You Duo: "Lin Yunzhu first met a man who was half her head taller, and then met a woman. That means after Ying Xingrong left, another woman came to the fifth floor."

Xiao An immediately corrected her guess: "That is, after the woman left, Ying came out of the room and pushed Lin Yunzhu downstairs."

You Duo: "It makes sense now."

But Cheng Jin said: "After you have met Ying Xingrong's son, then come to reason."

"Oh." Xiao An grabbed You Duo's sleeve, "Then let's go!"

Not long after Xiao An and You Duo left, people from the technical laboratory came to the teaching building, led by the deputy captain of the criminal police team. He blamed himself and repeatedly apologized to Cheng Jin and the others for not noticing the traces in the room before.

Cheng Jin was embarrassed because they didn't find out about it when they first came. "Let's all take this as a warning, we must be careful and cautious in our business."

This side is busy conducting trace inspection, but Ye Lai and Bu Huan are quite leisurely.

The place where Zhuang Lulu saw Lin Yunzhu and the social people was in the same block, and there were shops on both sides of the street. Ye Lai and Bu Huan's original consideration was to show Lin Yunzhu's photo to the people in the shop to see if anyone had an impression of Lin Yunzhu.

But it's too early now, except for the breakfast shop, the other shops are not open yet, so after arranging two policemen to guard the breakfast shop door to question the customers, Ye Lai and Bu Huan are free down.

The two looked at each other, then looked around, and Bu Huan pointed to a sign at the diagonally opposite intersection: "Internet cafe."

Ye Lai: "Go, let's go and have a look."

The Internet cafe just hung a vertical sign at the intersection, and the entity is in the alley, and you have to walk nearly 20 meters in to get there.

Enter the Internet cafe, show your ID to the front desk, and show her the photo of Lin Yunzhu: "Have you seen her?"

The front desk shook his head.

Bu Huan said: "Think about it again, she should have been here during the summer vacation, when she dyed her hair purple."

The front desk hesitated.

"What did you think of?" Ye Lai asked.

"I've never seen one with purple hair, but I've seen one with pink highlights."

"Is it her?" Bu Huan pointed to the photo of Lin Yunzhu that he took out just now.

The receptionist shook his head: "I don't remember if it's her, but it's also a girl of this age."

Bu Huan searched for some hair color pictures on the Internet and let the receptionist identify them: "Look at which one is purple and which one is pink."

"...I can tell the difference between purple and pink." The front desk pointed to a piece of cherry blossom pink hair color, "This is what she highlighted."

Ye Lai looked up at the camera on the top: "How long will the surveillance here be kept?"

"One month."

That's useless, Zhuang Lulu saw Lin Yunzhu two months ago.

"The pink-haired girl you mentioned just now, did she come alone or with a companion?" Bu Huan asked.

"There is a companion, a man with an airplane nose, who should be his boyfriend."

Zhuang Lulu mentioned that the social person suspected of being Lin Yunzhu's boyfriend left the nose of the plane cut short on both sides.

Bu Huan hurriedly asked the front desk about the characteristics of the other party.

"He looks ordinary, he has no special features, and he doesn't seem to be tall..." the front desk said, "I didn't pay much attention to him, for fear of causing trouble."

"What do you mean?"

"It's just that he doesn't look very easy to mess with, like someone who is out of society."

Leaving the Internet cafe, Ye Lai and Bu Huan stood at the intersection talking.

Ye Lai: "Pink hair, I don't know if it's Lin Yunzhu."

"I think so." Bu Huan said, "One-time hair dyeing, it will fall off after washing, and you can dye whatever color you want."

Ye Lai nodded: "That's right, it's one-off, you can change the color at will, there is only one thing that can't be changed: it must be washed off before going home, and parents can't see it."

"Isn't it? You have to act like a good girl in front of your parents."

When the shops on the street opened one after another, the question they asked the shopkeeper changed: "During the summer vacation, have you seen this girl? She often dyes her hair, sometimes purple and sometimes pink, and may have dyed other colors .”

"I seem to have a little impression..."

In the Teaching Affairs Building of Baoqiao Middle School, after technical inspection, half of the forefoot shoe print of the intruder was found in the room.

As for why the complete shoe prints were not found, it was because the other party had specially cleaned those prints, that is, removed the dust on the floor of that area.

However, due to the relatively rough cleaning techniques of the other party, it still left a trace of traces for the police, although this trace was of little help in tracing the identity of the intruder.

"Can you tell when the other party entered the room?" Cheng Jin asked.

Technician: "There is no dust accumulation in the place where the dust has been removed, so the other party should have entered the room in recent days."

"Unable to determine the exact time?"

"Yes."

"Okay, I see." Although he was mentally prepared, Cheng Jin was still a little disappointed.

If the time cannot be determined, the priority of this clue will be greatly reduced-it is impossible to invest a lot of manpower on a clue that is likely to be useless.

Technician: "We will check the extracted half of the shoe print to see if we can find out what kind of shoe it is."

"Okay, hard work."

At the end of the corridor in the third grade, two boys and a girl are talking, they are You Duo, Xiao An and Ying Huatian, the son of Ying Xingrong.

You Duo: "I'm sorry to interrupt your class."

At the moment the other students were in class, only Ying Huatian was called out by them to talk.

Ying Huatian shook her head, "If you really feel disturbed, don't call me out."

You Duo: "..."

Ying Huatian looked at him and Xiao An: "Are you really the police?"

"Still in an internship." Xiao An fooled him with words that fooled his father, and then asked, "Do you know why we are looking for you?"

"Because of that female classmate who jumped off the building?"

Xiao An's nerves tensed up, carefully observing Ying Huatian's expression: "Her name is Lin Yunzhu, you should know her."

"Well, she's my dad's gossip."

"..." Xiaoan didn't expect the other party to say it so directly, which was completely different from what she expected.

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