"Senior sister, don't think about it so much. Go back and have a good rest, and remember what you saw carefully! Not everyone has the opportunity to help the police solve the case. Yan Jin said, unconsciously there was a trace of envy in his tone.

Su Tang smiled bitterly: "I knew that you should have pushed that door." ”

"I want to, too. ”

Mo Meng listened to Yanjin's words, withdrew his gaze from the window, and asked Su Tang, "I remember you said that there was something behind the door?"

"Hmm. ”

When Su Tang pushed the door, he felt resistance, and then he heard the sound of something hitting the concrete floor. She was so shocked by the loud noise that her ears were ringing, and she didn't even look at what was standing behind her.

Mo Meng seemed to know what Su Tang was thinking, and said, "It doesn't matter what stands in the way. But I heard that the window and the other door of the classroom were closed tightly from the inside. ”

The classroom door had a thin iron bolt inside, and the window was one of those old-fashioned sliding windows. If it is locked from the inside, it is basically impossible to open it from the outside.

Su Tang hummed, and then asked, "So what?"

Yan Jin also poked his head out of the front seat and looked at Mo Meng, waiting for him to continue.

"This is a proper murder in a closed room!" Mo Meng's voice suddenly rose two degrees.

Su Tang looked at her expressionlessly, and a faint sentence floated out in his heart: She is so excited, why is she so excited.

"Senior sister, why are you so excited?"

Well, Su Tang is happy to have someone to help her say her lines.

"Is there one?" Mo Meng stretched out his hand, his palm facing his face, grabbed a handful of air, and shouted, "Close." Then his face returned to his usual face and he said to Yanjin, "If there is something behind the door, and that person dies from homicide, then this is really a secret room murder." I'm excited because I want to solve the puzzle. ”

"How can you be sure that the windows are locked from the inside? We haven't been able to go in to see, didn't Brother Yan say that he wanted to protect the scene?"

"Oh, this. At that time, when the police uncle was asking me a question, I accidentally glanced at the investigation placed next to me and saw it. ”

"Could that be suicide?" asked Yanjin.

Mo Meng bit her lip, lowered her eyes to look at him, and spoke very slowly: "You, ask a very, constructive question." Immediately, she sped up her speech, "Everyone said that he killed him." Have you ever seen someone wash their face with a high concentration of acid before committing suicide?"

The taxi driver who was driving finally couldn't help it.

"Classmate, what are you talking about? Where are the dead people?"

"No, master!" lest they talk nonsense again, Su Tang hurriedly spoke, "We just watched a movie and are discussing the plot." These two are a bit into the play. ”

Now that the police haven't released much information, how can they talk about it in front of others. After Su Tang stopped him, Mo Meng and Yan Jin also came back to their senses, they talked too much. So there was no word all the way to the hotel.

As soon as he got out of the car, Yan Jin came to Mo Meng's side and asked in a low voice: "Senior sister, according to what you said, it was a murder in a closed room, how did the murderer leave after killing people?"

"There are many possibilities. Mo Meng said, "For example, there is some kind of timing device in the classroom, and when the time comes, the device explodes, killing the person directly." But in addition to his face, the clothes on his body were also neat, and there were no signs of explosions around him. Could it be a miniature device, put in the person's mouth. It doesn't make sense, if it's in the mouth, the whole head will bloom. ”

Mo Meng asked and answered herself.

Yan Jin interrupted, "Senior sister, you said so much and didn't explain what the secret room was all about. ”

Mo Meng walked forward silently for a while, suddenly raised his head, and said to Yan Jin: "The bolt of the window is made of memory metal, and memory metal knows what characteristics." ”

Yanjin nodded.

"After the murderer finished the murder, he escaped through the window. Then close the window and make a small movement to make the deformed bolt lever return to its original shape and fall into the jack. ”

This is the most scientific explanation. Mo Meng raised his eyebrows and said, "But in many secret room murder stories, there are still some lame explanations." Perhaps the murderer didn't leave at all, he hid behind the door. When Tang Tang turned around and screamed, he ran out. But when he runs, there is movement, so he doesn't run far, or doesn't run at all, but acts as a bystander, blending in with us. After all, in that environment, Tang Tang's screams attracted people from the classroom next to him, and it was understandable. ”

"There is another possibility," Mo Meng said and looked back at Su Tang, who was walking side by side with Chen Mu, and said with a smile, "In many such stories, the first discoverer is often the perpetrator. ”

"Wow, that's scary. Yan Jin rubbed his arms and followed Mo Meng's words, "It seems that you have to stay away from Senior Sister Su in the future." ”

"Yes, then you're still here, so run. ”

"Run for what?"

Su Tang's mood almost recovered, and as soon as he finished asking, he saw Yang Lin walking towards them with a worried face on the side.

"Teacher, we're fine. Su Tang didn't wait for Yang Lin to speak, and first calmed Yang Lin's mood, "It's all right." ”

"It's okay. Yang Lin looked at the four students in front of him and calmed down, "Let's go back to the room first, have a good rest, and go back together tomorrow." ”

Speaking of going back, Su Tang talked about how much he would stay for a few more days. Yang Lin originally had an opinion, but knowing that Chen Mu and they were not leaving, he was relieved. But it is inevitable to give a few more words, after all, they are all children.

Whatever Yang Lin said, Su Tang nodded and said yes.

Yes, kid, twenty-eight year old.

After Su Tang and the others returned to the hotel, Zhang Yan went to the scene of the accident again. The whole building had been cordoned off, and he couldn't go up.

Just as he was pacing back and forth anxiously, he saw Yan Xiao walking over, she came from another direction. Her expression was grim, and when she saw Zhang Yan, her tightly locked eyebrows suddenly loosened, and then she smiled at Zhang Yan. This smile is like a flower blooming for Zhang Yan now.

"Are you alright? Zhang Yan shook her hand, "Why didn't you answer your call?"

"I don't have my phone. Yan Xiao turned her hand and interlocked her fingers with him, "I heard from my classmates that there was a death here, are you okay?" ”

"I'm fine. I just called you and no one answered, so I'm worried. ”

Zhang Yan was also relieved when he saw that Yan Xiao was doing well. After all, there are human lives in the school now, and as long as the murderer is not found, they are in more danger.

"You can go home and live these days. Zhang Yan said, "You are the only one left in your bedroom, I don't worry." ”

Yan Xiao also wanted to say that there were people in the dormitory next door, and the dormitory manager aunt was also there, but it was better to forget about it. In order not to worry Zhang Yan, she agreed. Then he thought of something and asked him, "What about you, do you want to go back to live with me?"