soldiers in front

"Wait a minute, what do you mean by convective wind? What if the convective wind closes the door? What does this mean?"

Xia Bingyang walked out of the bathing center without stopping, lowered his head and pressed his phone, and walked towards the Lutian parking lot like a gust of wind.

Ren Erdong asked hurriedly as he was leading him to a quicker pace as he followed him.

Xia Bingyang kept walking, and his tone was more anxious than him: "It means that Qin Ping entered the building material room passively, not actively. Wang Yao was dead before he entered the building material room!"

Ren Erdong was stunned, he took a step slower, and was soon left behind by Xia Bingyang.He took a few steps to catch up with Xia Bingyang, his expression excited: "You mean that Qin Ping was not the murderer who killed Wang Yao? This is impossible. Xi Xue saw Qin Ping come out of the building materials room with his own eyes. Qin Ping is the only one in the building materials room."

"No one saw Qin Ping kill Wang Yao with his own eyes, nor did he see when Qin Ping entered the building materials room where the homicide occurred. Xi Xue only saw Qin Ping walk out of the building materials room, and she didn't see Qin Ping's reason for what happened. When did you enter the building materials room?"

"It's illogical for you to say that. If Qin Ping didn't want to kill Wang Yao, why would he enter the building materials room?"

"As I said before, he didn't take the initiative to enter the building materials room, but was passive. He was lured there."

Xia Bingyang's pace was too fast, and Ren Erdong couldn't keep up, so he grabbed his arm: "This is even more ridiculous. At that time, there was no one in the school. Who can lure Qin Ping to the building materials room? Qin Ping will Stupid enough to be easily seduced?"

Xia Bingyang was grabbed by his arm, had no choice but to turn back, and said irritably, "Did you forget the flowerpot that fell from the balcony?"

"Flowerpot? What happened to the flowerpot? Didn't Wang Yao accidentally knock it down when she was resisting Qin Ping?"

"No one saw with their own eyes that it was Wang Yao who knocked down the flowerpot when he was resisting Qin Ping. What you said was just the police's speculation back then, but now I suspect that it was not Wang Yao who knocked down the flowerpot, but someone knocked the flowerpot down. The flowerpot was thrown down, just to lead Qin Ping to the building material room!"

Ren Erdong's mind suddenly turned very fast, so fast that he could almost hear the whirring sound of the engine in his head, and almost immediately understood the meaning of Xia Bingyang's words: "I | Fuck, you mean Qin Ping is upstairs When passing by the building materials room, someone threw a flower pot from the building materials room upstairs to kill him? That's why he ran to the building materials room to find out?"

"You're fucking on the road at last!"

"Then what is the basis for your suspicion?"

"Xi Xue said that it was less than a minute before she heard the sound of heavy objects falling to the ground and the sound of the door closing. Qin Ping, a tall and strong adult man, jumped from the first floor to the fourth floor after he was almost hit by a flowerpot. It also takes less than a minute to build."

Ren Erdong frowned: "It's a bit far-fetched."

Xia Bingyang said: "It's not far-fetched to connect the door closing sound heard by Xi Xue."

Ren Erdong wanted to ask again, but Xia Bingyang interrupted impatiently: "Go and drive, I'll wait for you here, this whole day can fucking steam people."

After speaking, he threw the key into Ren Erdong's arms, turned around and sat on the bench by the sidewalk.The benches are shaded by trees, much cooler than other places.

Xia Bingyang had always been afraid of the heat, so he ran under the sun for a while, sweating profusely on his face, and his entire face and neck were tanned red.He sat on the chair and took out his mobile phone to make a call. Listening to the beeping sound on the phone, he suddenly remembered that he was having a fight with Ji Zheng. Put aside the unresolved issues with Ji Zheng.

When the phone was connected, he saw a newsstand diagonally opposite. There was a freezer in the newsstand, and it must have sold cold drinks. A bottle of ice water.

The phone was connected suddenly, he held the phone between his shoulders, unscrewed the cap of the bottle and took a sip of cold water, coughed provocatively, and asked hoarsely, "Where are you?"

Ji Zheng on the other end of the phone happened to walk out of the gate of Bailu Town Middle School, and when he arrived at the car parked at the door, he hesitated for a moment before saying, "Bailu Town Middle School."

He didn't expect that Xia Bingyang would take the initiative to contact him. When he saw Xia Bingyang's caller ID, he thought he had read it wrong, or that Xia Bingyang had made a mistake. When he heard Xia Bingyang's inquiry, he deliberately slowed down his voice to remind Xia Bingyang who answered the phone who is it.

But Xia Bingyang seemed to have typed correctly, and then said: "Are you at school? Great, you go to the building materials room on the fourth floor of the main teaching building."

Ji Zheng was planning to get in the car, but when he heard Xia Bingyang's words, he closed the car door again, supported the front of the car and asked, "What happened?"

Xia Bingyang returned to the bench under the shade of the tree with the bottled water and sat down, stared at the ground and breathed a sigh of relief before saying, "It's urgent, you have to help me."

Ji Zheng didn't ask any more questions, just said "I got it" and then turned around and walked back.

The school security saw him go back and forth, poked his head out of the security room and asked, "What's the matter?"

Ji Zheng smiled at him and said, "Sorry, I left my car keys inside."

"go in."

Ji Zheng thanked him, and walked along the corridor to a teaching building directly opposite the door.

The phone quickly fell silent, Xia Bingyang still remembered the unhappiness between the two of them, deliberately kept his face sullen and did not speak, and only used a water bottle to cool his sun-burned cheeks.

Of course, Ji Zheng would not play petty temper like Xia Bingyang, he felt that the silence was a little unbearable, so he took the initiative to talk about the reason why he came to the school: "I wanted to ask the school to find out about the boy who disappeared in April, but the teachers and students started from today. It’s been summer vacation since the beginning, and there’s no one in the school.”

Hearing that he was so concerned about his own affairs, Xia Bingyang was touched a little, and felt that he shouldn't give him cold face anymore, but he refused to let him go like this, so he just said 'oh' lightly.

When Ji Zheng walked into the lobby on the first floor of the teaching building, he could tell that his indifference was deliberately put on, so he knew that Xia Bingyang was no longer angry with him, and was just quarreling with him again.He seemed to be able to see Xia Bingyang's tightly pursed lips when he was pretending to be indifferent, the twitch between his brows, and his erratic eyes, it must be very cute.

Ji Zheng held onto the handrail of the stairs to go upstairs, smiled slightly, and asked, "Can you tell me, what are you asking me to do for you?"

Xia Bingyang's expression changed immediately, he stared at the ground solemnly, and said, "Do an experiment."

"What test?"

"To test whether Qin Ping is the murderer who killed Wang Yao."

Ji Zheng was very surprised, but he didn't want to ask more questions. He quickened his pace and reached the fourth floor. He stood in front of the door of the building materials room facing the stairs and tried to open the door. The door really opened.

He walked into the building materials room, looked around, and said, "I'm coming in."

Xia Bingyang said seriously: "Let's see what's behind the door first."

When Ji Zheng walked to the door, he saw garlands, ribbons, balloons and other things piled up behind the door, and said, "They are all used for the sports meeting not long ago."

Xia Bingyang asked emphatically, "Are there any balloons?"

"Yes, there are many balloons."

Xia Bingyang pondered for a moment, then asked: "Is it windy over there now?"

"It's windy, level five up, less than level six."

"That's enough, Brother Ji Zheng, you open the window in the building materials room."

Hearing the lost and recovered 'Brother Ji Zheng' again from his mouth, Ji Zheng's heart trembled slightly, and he breathed a long sigh of relief, then walked to the window and opened it: "Then what?"

"Is the door of the building materials room facing the stairs?"

"Yes."

"Is there a window in the wall at the corner of the stairs, too?"

"Yes."

"Open that window, too."

Ji Zheng also pushed open the window at the corner, then walked back along the stairs: "It's open."

"Isn't there a balloon behind the door? You take a balloon and fill it with water."

Ji Zheng still didn't ask anything, just did as he said, filled the balloon with water under the bathroom faucet, and then took the palm-sized water balloon back to the door of the building materials room: "Okay."

"Take another balloon and tie the water balloon to the top of the air balloon."

Ji Zheng already knew what he wanted to do, and without his detailed instructions, he pulled the top of the air balloon out of the gap behind the door and tied it with the water balloon.In this way, the air balloon is still behind the door, while the water balloon is in front of the door.

"It's fastened."

He said.

Xia Bingyang said again: "Now push the door of the building materials room open to about ninety degrees."

Ji Zheng slowly pushed the door open and kept staring at the water balloon at the corner. The balloon has been deformed with the squeeze of the door. If it is filled with air instead of water, it will definitely explode after being squeezed , but the water in the balloon can withstand a certain degree of crushing.

When Ji Zheng opened the door, he immediately felt a cool convective wind, and the door shook slightly.

"Ok?"

Xia Bingyang asked.

Ji Zheng said: "Okay."

Before starting, Xia Bingyang asked again: "How is the wind strength now?"

"Same as before."

Xia Bingyang took a deep breath slowly and said, "Brother Ji Zheng, pop the water balloon now."

Ji Zheng took off the twisting needle used to pick wood thorns for Xia Bingyang last time, and tapped lightly on the surface of the water balloon. The water balloon made a low sound and burst instantly, leaving a pool of water stains.

At the same time he pierced the water polo, the door was hit by the convective wind, as if someone had yanked it from the outside, and the door closed with a "hutong", and the cracking sound shocked the entire corridor.

Ji Zheng suddenly understood the significance of his experiment, stood up slowly, and said solemnly: "Bingyang, the door is closed."

Xia Bingyang breathed a sigh of relief from the bottom of his heart, his whole body relaxed a lot, but his heart felt even heavier, and he said, "I heard it."

Ji Zheng pushed open the door of the building materials room, and found the air balloon that had just been tied to the water balloon in a pile of balloons behind the door, and then searched along the bottom of the wall, and finally found a complete one in the gap between the ribbon and the garland. The broken rotten balloon tied together with the air balloon, and a small sewing needle two centimeters long was found in the gap between the base of the wall and a tile.

He pinched the needle between his fingers and turned it back and forth twice, lowered his eyes and said in a deep voice: "I found a needle in the corner behind the door."

As he spoke, he looked back at the window on the opposite side of the corridor, as if he could see a person hiding behind the window, holding some kind of catapult in his hand, and a small and sharp sewing needle shot out from his hand, piercing the A water balloon caught between doors.

Although Ji Zheng didn't say much, but Xia Bingyang knew that he had understood the purpose of this experiment, and said: "It seems that we are all wrong, Qin Ping is not the murderer who killed Wang Yao." He stopped and put his thoughts in his mind After reading it again, blurred figures gradually appeared in front of my eyes. Among them, the petite girl with short hair was Wang Yao, but the others had faces engulfed by the black mist, but they also showed a pair of sharp cold lights. eyes, hiding in the dark and peeping at her, trying to destroy her.Xia Bingyang said slowly: "The murderer hid in the building material room after killing Wang Yao. He waited until Qin Ping passed by downstairs and threw the flowerpot from upstairs. The flowerpot almost hit Qin Ping. Qin Ping Seeing the figure flashing by behind the window, Qin Ping was so angry that he was almost hit by a flower pot and died, so he decided to go to the building materials room to see what happened, so he ran up to the fourth floor and saw the door of the building materials room was open. He rushed in. At the same time as he entered the door, the murderer hid behind the window at the corner of the corridor, and shot a needle with some kind of instrument, and the needle pierced the water polo that the murderer had placed in the crack of the door in advance. After the rupture, the door lost its barrier and was immediately closed by the convective wind in the hallway. Qin Ping was trapped in the room, and the scene of him walking out of the room happened to be seen by the female teacher Xi Xue who stayed at the school. In this way, Qin Ping became the only suspect in Wang Yao's murder."

Ji Zheng was puzzled: "Why didn't Qin Ping explain?"

Xia Bingyang was a little frustrated: "The police only look at the evidence when they handle the case, and they only look at the evidence when they go to the court. The room Qin Ping entered was only the deceased. I don't know. Maybe he just knew that he couldn't explain clearly, so he ran away."

Ji Zheng put the needle into his pants pocket, walked out of the building materials room and closed the door: "Since Qin Ping wasn't the murderer who killed Wang Yao, would he be the murderer who killed other children?"

Ji Zheng is very keen, very good at grasping the key points, and immediately pointed out the doubts that Xia Bingyang only dug out.

Xia Bingyang rubbed his forehead, closed his eyes and thought for a while, before saying, "Although Qin Ping got rid of the suspicion of killing Yu Bingjie, he was indeed the murderer who killed Liu Changran. We have found conclusive objective evidence."

Ji Zheng didn't know much about it, so he didn't say much. He walked downstairs and asked, "What are you going to do next?"

"Next... we still have to find Qin Ping."

Ren Erdong drove the car over, stopped on the side of the road and honked the horn.

Xia Bingyang glanced at his gray off-road vehicle, and was very reluctant to hang up the phone, but he still said: "I have something to do here, that's all."

Ji Zheng quickly walked out of the teaching building, walked towards the school gate under the poisonous sun, raised his left hand to cover his brows to block the sun, and said hurriedly: "Wait a minute, Bingyang."

Xia Bingyang listened carefully to the voice on the phone: "Is there anything else?"

Ji Zheng laughed softly: "Have we made peace?"

Xia Bingyang kept a cold face, but raised one corner of his lips to show a little smile, pretending to be cold and said: "That's so easy."

Ji Zheng smiled softly and said: "I apologize to you, forgive me, please?"

Xia Bingyang was startled, his ears and half of his body were numb, but he still held his shoulders and said, "No, I said I want to see you, and I have something to say to you."

Thinking of what he was going to say to himself, the smile on Ji Zheng's face gradually dimmed, but he still whispered softly: "Speak on the phone, I won't interrupt you this time."

Xia Bingyang said stubbornly: "It's too late, I must tell you in person."

Ji Zheng's face was empty, his eyebrows were slightly frowned, he seemed helpless, but he had no choice but to do it, and he didn't know what to do, so he could only promise him: "Okay, I... find a way as soon as possible."

After hanging up Xia Bingyang's call, his thoughts became a little confused again, and it was only when he was about to leave school that he remembered that the purpose of his trip was to inquire about the mute boy who disappeared in April.

There was only one security guard left in the school, but the security guard was also from Bailu Town, so he asked the security guard.

The security guard had nothing to do, and was very interested in such things. After talking with Ji Zheng for a few words, he moved to other places: "The child you mentioned is probably abducted, but I haven't heard of anyone Lost a boy."

Ji Zheng thought that he didn't know the deeper information, thanked him when he was about to leave and heard him say: "Maybe it has something to do with that."

Ji Zheng stopped immediately, looked at him and asked, "Who?"

The security guard pouted down the mountain: "The one who just died."

"You mean Zhai Wengang?"

"Yes, his child was bought from a human trafficker. He may know the way to do this."

Ji Zheng was taken aback: "Isn't Zhai Xiaofeng Zhai Wengang's biological son?"

The security guard smiled strangely: "Yes, it's troublesome. Zhai Wengang's daughter-in-law can't give birth, so he bought it from the trafficker. The whole village knows about it, but no one mentions it."

Ji Zheng asked: "Why?"

The security guard laughed again: "Who dares to guarantee that this kind of thing will not happen at home, wouldn't stabbing it out cut off the big guy's escape route?"

Ji Zheng could hear that he meant that the residents of Bailu Town kept a tacit understanding without mentioning a word in order to leave a way for themselves to 'buy and sell children'.The reason why the security guard was willing to tell him was because he was not a policeman, but just a tourist, and he might leave tomorrow, so he couldn't cause any trouble.

His stomach suddenly rolled, as if he had eaten something dirty, and his entire chest was dull and depressed.He returned to the car and turned on the air conditioner to the maximum, and it took a while for the cold wind to get better. He was about to contact Min Chengzhou immediately, when he suddenly caught a glimpse of the security guard standing at the school gate who had been staring at him.

The security guard seemed to have noticed something, and a pair of cloudy black eyes on the black square face stared at him firmly, with unkind eyes.

Ji Zheng felt chills down his spine, temporarily put down his cell phone and started the car to continue walking down the mountain. After walking for more than ten minutes, Min Chengzhou's call was broadcast.

"What's up?"

Min Chengzhou seemed very busy, so he asked directly.

Ji Zheng took a deep breath before saying, "It's very important, where are you?"

Min Chengzhou noticed that Ji Zheng, who has always been calm and steady, was a little unstable at this time, so he immediately became cautious: "What's the matter?"

"Meet me, where are you?"

"Tell me where you are, and I'll send someone to pick you up.