37 shoes size, many children wear 37 shoes at the age of 11, and this foot is a bit small!

But this footprint is the clearest footprint on the scene. In fact, it is not a footprint, but a set of footprints. The technical police officer was puzzled, and Han Bo also felt a little strange. He looked at the marks made on the ground in the house, confirmed where he would not destroy the scene, and walked in to investigate together.

Footprint gait analysis is a practical technology with strong theoretical and practicality. It is necessary to clarify the ground conditions left by the footprint based on the on-site situation. For example, the softness and hardness of the ground and the degree of influence of various actions on the footprint footprint characteristics, analyze various factors left by the people on the on-site footprint, and make a comprehensive judgment.

On the premise of determining the conditions for footprint retention, the gender, age, height, posture, walking posture, etc. of the person left behind the footprint retention will be analyzed.

Han Bo squatted down, touched the dust on the ground, then moved forward, and observed the lifting and landing characteristics of his footprints with the technical police.

Generally speaking, short people with big feet are prone to pedal marks, tread marks, and buckle marks. However, tall people with small feet are usually pressed down with thumb, with a small outer edge on the outer side of the forefoot, and a large outer foot...

After careful observation and study for nearly half an hour, my legs were numb.

Han Bo stood up, walked out of the house and took out his cell phone, used the calculator in his cell phone, and converted it using the formula.

During his BJ study, I visited a footprint expert and humbly asked for footprint gait analysis technology. I have never used it in recent years. I didn’t expect it to be used today. However, the clues analyzed through footprints can only be used as reference.

If I hadn't inquired before, Miao Wentao would directly think that he was pretending to understand if he didn't understand.

But now is not before. Du Zhigang said that the person in front of him was the director of the Criminal Technology Center of Nangang Public Security Bureau and the director of the Criminal Science Institute. Except for not being able to examine the body, there are almost no other criminal technology he can't do.

Miao Wentao came over and asked curiously: "Chu Han, can you analyze your height and weight?"

"It's really a bit strange. If nothing unexpected happens, the person who left this group of footprints is a male. He is around 16 years old, is about 1.61 meters tall, weighs about 48 kilograms, is thin, and has a small robe."

"Child?"

"Will it be before or after the incident?"

After finally making progress, Miao Wentao and Lao Yu were amused and crying.

Han Bo looked back and walked to the east gate with the two of them, while saying with a bitter face: "From the scene, several footprints were left at the same time."

"Is it possible that the height and weight match, and there is an error in age? After all, people are different, especially in development. Look at those dwarfs, they are still so tall in their decades."

"It's possible, so the footprint gait analysis can only be used as a reference. However, judging from the pattern of the shoe print, it should be a pair of sneakers, the kind of sneakers that students like to wear."

“Where are the other footprints?”

"All of them are male, they should not be old, they should not be tall, and they should not be heavy."

"A bunch of children killed people?" Miao Wentao felt incredible, and thought about it and said, "It should have been after the incident. There were many children here to play in this place, and the footprints were left by them, and the traces of fighting were not."

The traces of fighting echoed the steps. Thinking of the 110 police cars I encountered on the way, and thinking of a group of lawless minors fighting, Han Bo sighed: "Miao Team, Section Chief Yu, I think you are not wrong. This case should be done by a few naughty kids."

"Where is the motivation, it's fun?" Lao Yu couldn't imagine it and couldn't help but frown slightly.

"It's fun, exciting, and courageous, and maybe even a ceremony to accept new members to join their small gang. In TV movies, they kill chickens, and they kill people, not only kill people, but also blame others."

"Anything is true, it should not be verified." Miao Wentao had just preconceived ideas and felt that only adults could do it. Now the more they thought about it, the more they made sense, because there was only one possibility that the other possibility was eliminated, and there were still footprints on the first scene.

"I called Ying Detachment, and Wang Yunhai probably didn't let him go. I asked the four suckers. If it was true, they should have an impression."

...

After receiving the call, Ying Chengwen did not dare to delay for a moment and immediately notified the police officers who were interrogating the First Detention Center to verify. He walked into an office on the second floor of the Third Criminal Police Brigade and personally asked Wang Yunhai.

"No, comrade of the police, really, no! I know the importance of it. I just make some money to support my family. How could I rent those landmarks to my children?"

Until now, Wang Yunhai didn't know the real purpose of jointly enforcing the law by the Cultural Bureau and the Public Security Bureau. In his mind, the police only knew how to fine and make money, so how dare they admit that they rented yellow-colored CDs to minors. If they admit it, it would be a crime.

His eyes flashed, and he knew he was lying at a glance.

Not to be honest, Ying Chengwen was almost angry. He opened his briefcase and took a stack of photos in front of him with a bang. "Wang Yunhai, I'm not honest about it until the end of death. Do you want to live?"

"Comrade of the Public Security Bureau, don't you scare me, isn't it just renting a video DVD? How big a problem? I'm a laid-off worker, making a living, and not causing trouble to the government. Don't cause trouble to me, okay?"

"Look clearly and take a closer look!"

I don’t know if I was framed and blamed. If I had not neglected at the time and found you through the tie, and you could not show the absentee proof, I might have been a scapegoat.

Ying Chengwen glared at him fiercely and raised a photo: "Whose tie is this? It doesn't look familiar, how could it appear at the murder scene?"

"Murder case, this...it's nothing to do with me." Wang Yunhai was stunned.

"It's not your business. Look at this picture. Do you recognize this person? He shits and pees at the door of your store. You have beaten him. The whole world knows it."

Ying Chengwen pointed at his nose, picked up the small camera, took out the video recorded during the search at noon, and quickly went to the section where the fruit knife was found: "I saw that, the weapon was also found in your store. If you say it's not your business, who would believe it?"

It turned out to be the old beggar and bastard. Wang Yunhai reacted and said sadly: "Comrade Public Security, I was wronged. I beat him up. If he shits and pees at your door, would you be angry? But... But I really didn't kill him. How could I kill someone? How could I kill someone for this matter!"

"You didn't kill me, then tell me why the tie was at the crime scene and how could the weapon be in your store?"

"I'm wronged, I'm sure which king-Bao-dan framed the blame."

"Who will blame you, why do you, why don't he blame others?"

"I think about it, Ding Erdan must have done it. He doesn't care about my wife for a day or two, and everyone in the neighbors knows it."

"Ding Er egg?"

"I don't know about the nickname Erdan, but... it's not likely that it was him. He went to work in Dongguang last year and didn't come back during the Spring Festival. It could also be him who secretly ran back to kill someone, then blamed me and framed me."

It turned out that the police went to search the store because of this. Wang Yunhai finally realized that he did not dare to joke about his life. He said in one breath that more than a dozen people who might frame the blame, but he didn't expect that he had a lot of enemies.

He is unlikely to kill people because the homeless man shits and pisses at the door of the store. The dozen people he mentioned are also unlikely to kill people by killing people through those things.

Despite this, the names should be recorded one by one by one.

When he could no longer think of someone with conflict, he asked coldly: "Wang Yunhai, please understand your situation. The last question must be answered truthfully."

"Comrade of the Public Security Bureau, just ask, I promise not to tell lies."

"Have you rented the DVD to minors?"

"Rent." Life was hanging on a thread, and Wang Yunhai dared not speak nonsense anymore.

“Is there a lot?”

"Not much, no more."

“How many are there?”

Wang Yunhai thought about it and said honestly: "There are more than a dozen people who often go to my place to rent."

"What are their names, what do they look like, about age, and which school they go to? Do you have any impression?"

...

I didn't know if I asked, but I was shocked when I asked. One of them went to rent a yellow-color CD. Because I had a dispute with Wang Yunhai, the age, height, body shape, and gait of the No. 4 Middle School students who had a dispute with Wang Yunhai almost fully met the characteristics provided by Han Bo.

The soldiers are very fast, Ying Chengwen has no time to interrogate them again, so he immediately took him to No. 4 Middle School to confirm.

Han Bo received the notice and hurriedly reminded: "Ying Detachment, all signs indicate that several cases are most likely committed by multiple people, and they are very likely minors. I don't think it's a big shock to the school. First, find the school to ask for photos of the student, and let Wang Yunhai look at the photos to identify them. After identifying them, then find out the situation of the student during the school period.

Those who are usually with and where to play often are clear. Then take photos of other people for the three people detained in the detention center to identify them, and then take action. Not only should compulsory measures be taken, but evidence should also be collected and fixed as soon as possible."

A bunch of brats almost caused a series of unjust cases. As the captain of the Criminal Investigation Detachment, Ying Chengwen's mood can be imagined.

I couldn't control my emotions just now and just wanted to capture the real murderer as soon as possible, but I almost made another mistake.

He quickly calmed himself down, held his phone tightly and said, "Don't worry, Chu Han, I won't act rashly. It's already done like this. I can't fight any more unsure."

"Okay, you can take Wang Yunhai to No. 4 Middle School first, and I will go to the detention center to wait for news with Bureau Song."
Chapter completed!