National Forensic Doctor

"Pan Tianlei, tell Captain Jiang what you said before." The interrogation police officer of Changyang Municipal Bureau spoke in a serious tone, taking a high-pressure approach.

Pan Tianlei is a fat man in his 30s. The flesh in his neck is trembling. He is sweating under the air conditioner. He whispered: "I don't know much. It's just... Lu Jianchun has been famous in our area since he was a child. Many people come from factories outside and ask where "Lu Jianchun" is, and challenge him. After he won a few times, we called him the head army."

"What does it mean to fight the head?" Jiang Yuan asked.

"Yes, he also led us to fight back. The name called out outside is the tiger head army, the tiger pioneer!" Pan Tianlei spoke with a hint of reminiscence.

"More than ten years ago, there was a famous gangster." Meng Chengbiao sat next to Jiang Yuan. Although he is good at interrogation, he has no chance to interrogate in Changyang City, otherwise he would not have taken the initiative to transfer from the Changyang City Criminal Police Detachment to Jiang Yuan's subordinates to find opportunities.

In fact, Meng Chengbiao did find an opportunity.

During the interrogation, Jiang Yuan obviously trusted Meng Chengbiao more and always brought him with him.

Pan Tianlei was trapped in the interrogation chair, swallowed his saliva, and said: "When he was in high school, he was famous for fighting. Later, hooligans on the street came up and he was injured. Later, because he was a minor, he was released and nothing happened. After that, he fought less."

"I didn't see the record." Liu Jinghui sat up straight. Even if he was a minor, if he really injured someone, there should be records and files.

"I heard that someone settled it." Pan Tianlei whispered.

"The point is why he rarely fought later." The interrogation police officer of Changyang Municipal Bureau reminded to pay attention to the key points. He has been in charge of interrogating Pan Tianlei for two days, and all the details that can be interrogated have come out. Now the main thing is to show the results to Jiang Yuan.

Jiang Yuan nodded: "Tell me about it."

Pan Tianlei swallowed his saliva and said: "At first I thought he was scared or something, but then I asked him to go out and play, and I found that he had a lot of money on him. At that time, it was a lot of money, thousands of yuan. Lu Jianchun's family conditions were very ordinary. His parents worked outside, and he lived with his grandparents. He used to have at most a few dozen yuan on him, and he had to find ways to get it."

Pan Tianlei: "I asked him where the money came from. Lu Jianchun said that he worked as a security guard and the boss rewarded him. Later, he basically didn't appear on the streets. He ran to other places at any time. When I asked him at that time, he said it was training. Later, he didn't say anything. Later, we saw less and less. He just did his small business anyway, but the business was not very profitable, but he had no shortage of money."

"Where did he go to train, and who trained him?" Liu Jinghui seized the key words.

"Qinghe City, I didn't ask the details."

Liu Jinghui and Jiang Yuan looked at each other, and there was a proud and meaningful smile from the interrogating police officer next to them.

When the words Qinghe City and security are mixed together, people will immediately think of Jianyuan Group.

Not only Jiang Yuan and Liu Jinghui, who are in charge of the case, can think of it, but the police in Shannan Province can basically think of it.

Jianyuan's case involves too much. Such a large enterprise, such a high sales volume, has a huge impact. After Jianyuan Group was knocked down, almost all the relevant personnel in major cities in Shannan Province were arrested, and many details of the case were also widely circulated.

Liu Jinghui took over from Jiang Yuan and asked another round. He almost got Pan Tianlei out before letting him go back.

The police in charge of the interrogation and others could not see it anymore, and then summarized and said: "From this point of view, Lu Jianchun was trained by Jianyuan Group, and it is very likely."

"I agree." Jiang Yuan nodded, and then said: "The interrogation was good."

"Thank you, Captain Jiang." The interrogating police received the expected comments and smiled.

"Let's interrogate Lu Jianchun." Jiang Yuan stood up and said: "I'll leave it to you."

The interrogating police of Changyang City Bureau couldn't help but look at Meng Chengbiao, and then replied "yes" with surprise.

Meng Chengbiao was in a stable mood. He was already in his 40s, and was no longer at the age of snatching jobs and taking credit. Even if he wanted to make progress, he would rather follow Jiang Yuan and work hard.

As for the interrogation of Lu Jianchun, Meng Chengbiao did not find it stimulating at all.

It was not uncommon for defendants to remain silent, and most of them were still hoping for the best. If the crime committed by such a suspect was not serious, and there was a little bit of luck and place, there might be a chance to go home peacefully, but when it came to such a serious case with a lot of evidence, just being silent was definitely not enough, it would be better to...

"Let's go back and eat hot pot." Jiang Yuan was also in a stable mood.

After using LV6 bloodstain analysis, Jiang Yuan basically determined that Lu Jianchun's body shape and posture matched the image of the murderer at the crime scene - the so-called body shape and posture, like the footsteps and gait, body shape is quantifiable data, and posture is a state of change, or a relative state of the body.

It's like looking at a person's back. You can roughly tell how tall, short, fat, and thin the person is, but you can never read the exact data. But on the other hand, you can tell if he is someone you know by looking at his walking posture.

At this point, posture and gait seem to merge again.

But at the scene of bloodstain analysis, when no footprints are found, the posture can only be indirectly judged based on the bloodstains.

On the other hand, gait analysis has been scientificized step by step in recent years. Experts and scholars from multiple professions have spent a long time. What the former shepherd old man Ma Yulin could only teach by words and deeds has just been partially learned by the computer. This is also a true international leader.

Simple body analysis that does not match gait is still in development and cannot be quantified, which means it is difficult to use as evidence. However, in the investigation stage, it is enough to make judgments for Jiang Yuan or other investigators.

Jiang Yuan was 90% certain that Lu Jianchun was the murderer, especially after his confession, which basically solved all the doubts. The rest was just waiting for the flowers to bloom.

It's just a tiger vanguard. At most, if there are a few more monkeys, who can't defeat him?

In a small house of 220 square meters.

The smoke from the hot pot is steaming.

A meat grinder was working hard, cutting square pieces of frozen beef into thin slices.

The beef is naturally produced by Jiangjia Ranch, and the frozen meat is also frozen in their own newly built cold storage.

While fresh beef is good, frozen beef is actually also delicious. The promotion of merchants is often just to add some added value. For Jiang Fuzhen and Jiang Yuan, choosing the right way to eat may be more important.

Jiang Yuan ate half full, then scooped up a bowl of rice to go with the hot pot.

Looking at Jiang Yuan who was eating so deliciously, Liu Wenkai, Wang Chuanxing and others felt a little uneasy.

"I don't know how the interrogation is going over there. Even eating hot pot is a bit unpalatable."

"There should be no problem after trial. The evidence is there."

"It's all circumstantial evidence."

"Otherwise, if there was direct evidence, there would be no need to investigate at this time."

Several people were talking nervously, eating meat nervously, and clearing the table faster than normal.

A 30-year-old detective can eat more than an eight-month-old pig. Sometimes he doesn't even have the concept of being full.

Jiang Yuan watched a large plate of meat being eaten up, and when the meat grinder was a little late, he simply got up and took out some frozen goods such as beef balls from the refrigerator to serve first, and then said: "We have new ones now. Regarding the direction of the investigation, if Lu Jianchun insists on refusing to explain, we will go find Jianyuan’s remnants, especially those who were Jianyuan’s security guards at the same time, there are always people who know him.”

"Jianyuan's security guards... must have been shot almost all." Wang Chuanxing would track previous cases from time to time and knew that Jianyuan's case had entered the stage of mass shootings.

Liu Wenkai suddenly sighed: "The one who does such a dangerous job as a security guard is Jianyuan."

"At this time, I think it's appropriate to sing a song." Shen Yaowei suddenly became interested and was about to sing a favorite song when a cell phone ringtone rang.

Jiang Yuan picked up the phone.

Everyone automatically turned off the sound mechanism.

"Captain Jiang!" the interrogating police officer said seriously on the other end of the phone: "Lu Jianchun confessed that he received training at Jianyuan Group. He was originally responsible for arranging deliveries and killing people. Later, he participated less and happened to meet Until Jianyuan was destroyed, he was indeed capable of committing crimes, and Lu Jianchun himself admitted that he was the murderer of Case 303."

"What is the motive?" This is the main factor that has not yet been determined, and it is also the part that is difficult to directly understand through evidence in most cases.

The interrogating policeman breathed a sigh of relief and said: "After Lu Jianchun and Zhao Qian had sex, Zhao Qian secretly dragged his wife into a multi-player sport. They played together for several days, and then she wanted to drag Lu Jianchun in. , but it turned out that Lu Jianchun was a one-sided lover, and he was furious at that time, but his wife took the initiative to ask for divorce. He was depressed for a while, and then decided to take revenge. "