"Qiuwen, Xiaodong, the two of you are in charge of visiting and investigating the place where the crime occurred, the place where Huang Limei was killed, the place where Wang San was kidnapped and killed, and the surrounding areas."

"Shaolong, I always think that the mysterious phone call Zhang Guanwen received before Huang Limei was killed is an important clue.

You follow this clue and investigate whether there are surveillance cameras and witnesses near the phone booth. On that night, you saw the mysterious person who called. "

"Also, didn't the mysterious person use the IC card, then look up the IC card, where did you buy it, maybe the mysterious person who made the call is a breakthrough for us to sort out the case and seek the truth. !"

"Although the Zhenyuan Street Police Station has done a lot of investigations when investigating the case earlier, we still need to be more serious and find a breakthrough."

According to Professor Wang's explanation, change the way of thinking and conduct investigations.

Ye Qiuwen and Lin Dong are in charge of investigating the scene of the crime and surrounding situations.

There are two crime scenes, one is the scene where Huang Limei was killed, and the other is the scene where Wang San and Wu Tianhe were kidnapped and Wang San was killed.

When they arrived near Zhenyuan Street, Lin Dong and Ye Qiuwen got out of the car and began to visit, looking for any witnesses on the night Huang Limei was killed.

Huang Limei disappeared on May 5, and the forensic doctor has determined that the time of her death was the night of May 6, around eight o'clock.

Huang Limei didn't go to school that day, so what did she do, did she have a room with someone, or what did she do.

There must be a record for opening a room, but Ye Qiuwen has already retrieved it, and has not found the record of Huang Limei's opening a room in a hotel or guesthouse.

Except for Huang Limei, Wang San, Zhang Guanwen, Wu Tianhe, and Huang Lijuan did not have any records of opening houses that day.

It should be known that the computer management systems of hotels, hostels and other places are connected to the Liujiang City Public Security Supervision System, and anyone who registers with an ID card can find relevant information.

But there is also the possibility of using someone else's ID card to register.

So in the morning, Lin Dong and Ye Qiuwen separated and visited the hotels, hotels, clubs, etc. near the crime scene.I also visited restaurants, grocery stores, etc. on Zhenyuan Street.

There may be someone who witnessed Huang Limei's murder that night and did not dare to call the police. If there is such a person, it will be a huge key point for the case.

The process of solving a case is inherently complicated and boring, but it needs to be treated with caution, as it is impossible to solve a case in the blink of an eye.

It must take a lot of hard work and sweat in the middle.

Nothing happened all morning.

The septic tank is in a relatively hidden location, and there is a green belt in front of it. If you don't pay attention, you won't notice anyone nearby.

Assuming that Wang San called Huang Limei that night and asked her to meet, Huang Limei was led by Wang San to the green belt here, and took advantage of Huang Limei's unpreparedness to strangle her to death.

Although there is a road next to it, but at night, there are few people. If you want to go, you will go to the park not far away. Who will come here.

So it is unlikely to find witnesses.

in the afternoon.

Ye Qiuwen took Lin Dong to the scene where Wang San was killed.

Here is a dilapidated factory building, the factory building is leaking, the ground is wet, there is something similar to a large oil barrel next to it, and there is a rusty iron pipe in front.The tube is wrist-thick.

Although rusty, the iron pipe is still very strong.

Ye Qiuwen pointed to the iron pipe, which had two scratches on it: "At that time, Wang San and Wu Tianhe were tied to these two iron pipes, Wang San was on the left, and Wu Tianhe was on the right. Zhang Guanwen pressed Wang first. Three, he even hit Wang San on the head with a brick, Wang San was afraid that Zhang Guanwen would kill him, so he confessed honestly."

"Unexpectedly, after the confession, Zhang Guanwen became even more angry, and smashed Wang San's head with a brick, causing Wang San to lose consciousness. After Wang San passed out, Zhang Guanwen stripped off Wang San's clothes, and even spat on Wang San.

The meaning is to humiliate him, and then wrap Wang San with plastic wrap, and suffocate him to death! "

"Wangsan struggled during the period, but he himself was injured, and the plastic wrap was wrapped several times, and he couldn't break free. Wu Tianhe was so frightened that he peed in fright. There was still Wu Tianhe's urine under the tube The liquid has already been DNA, and it is definitely Wu Tianhe's."

"Later, after Wu Tianhe was released, Zhang Guanwen dragged Wang San's body to the car and threw it into the green belt. I got the surveillance probe and found that Zhang Guanwen's car was indeed driving by that road that night, that is, The body was thrown away at that time."

Lin Dong nodded, and went to the iron pipe to have a look.

Then what surprised Ye Qiuwen was that Lin Dong stood in front of the iron pipe, with his back to her, and began to untie his belt.

Seeing this, Ye Qiuwen blushed and said angrily, "Xiaodong, what are you doing? If you pee, you go to the other side. This is the scene of the crime, and the cordon is pulled up, so it cannot be damaged."

What are you doing? Although she is a colleague, she is a woman after all, men and women are different, what is Lin Dong doing with such a thing.What's more, Ye Qiuwen also has a boyfriend.

But Lin Dong turned around and smiled at Ye Qiuwen, and said, "Sister Qiuwen, you misunderstood, my belt is loose and tight."

Ye Qiuwen glared at Lin Dong displeasedly: "Are you kidding me? Really, there is no one like you. I am older than you. If you are like this, I will ignore you in the future!"

Sister, you misunderstood, I don't think too much about you.

Hey!

Lin Dong was still smirking there.

Ye Qiuwen knew that Lin Dong did it on purpose, she was sullen and unhappy.

But Lin Dong squatted down again, lying there looking at something.

Watch attentively.

"What are you looking at?" Ye Qiuwen asked.

Walking over, Ye Qiuwen saw Lin Dong looking at the traces of urine left by the puddle of urine.

Because it is more humid here, the urine is not easy to dry up.

After the incident, Zhang Guanwen turned himself in. The urine left by Wu Tianhe has not dried up, but part of it remains.Now the urine has long since dried up, leaving only a trace.

Most people think that urine does not extract DNA, which is wrong.

Urine is a metabolite of the human body. The main components in urine are water and salt, as well as some epithelial cells.Epithelial cells are also composed of DNA, so DNA determination can also be performed by extracting cells from urine.

Lin Dong raised his head, looked at Ye Qiuwen, and asked a very strange question: "Sister Qiuwen, when you say that most people pee, do they take off their pants or wear them?"

Hearing Lin Dong's question, Ye Qiuwen frowned, and said angrily, "You're asking nonsense, of course you have to take off your pants to pee, don't you know the common sense that even children know?"

"Well, I have to take off my pants."

Lin Dong muttered, "Then Wu Tianhe was so frightened that he peed on his pants. Did he take off his pants or wear them?"

After giving Lin Dong a blank look, Ye Qiuwen didn't know what happened to Lin Dong today. It was strange that a person who was originally a good person seemed to have lost a nerve in his brain.

"When Wu Tianhe was scared to pee, he was wearing pants!" Ye Qiuwen replied bitterly.

"No, Wu Tianhe took off his pants at that time, and he didn't urinate against the iron pipe, but urinated in the direction of the iron pipe, just like me." Lin Dong touched the belt again. .

Just touching, not really taking off the pants.

Ye Qiuwen was completely confused by Lin Dong, how did the way to solve the case have something to do with the urinating posture?

Seeing the confusion on Ye Qiuwen's face, Lin Dong said, "Okay, Sister Qiuwen, I won't play around with you anymore, I'll just say it straight, this piss, it's not right!"

"Huh?" Ye Qiuwen thought she had heard wrong.

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