Linghu Yunfei turned on the headlights.

Zhao Zimeng took the autopsy report and photos, and looked at them carefully through the faint light of the headlights, he didn't let Lin Di say it, he wanted to find the answer by himself. More than a dozen photographs were taken before and after the corpses were assembled.

Zhao Zimeng watched it for about three minutes, but he didn't see the problem: "Lin Di, you just say it!" ”

Lin Di opened the conversation record book again and handed it to Zhao Zimeng's hand.

Lin Di asked Zhao Zimeng to see the record of the conversation between the comrades and Che Huating. There are several breaking lines in a dozen rows. There are a few lines above the breaking waveline. The words read:

"My father's legs are different from others, and there is a very distinctive feature."

"My father's calves are much longer than his thighs, and the average person's calves are about the same length as their thighs."

"Lindy, I see what you mean, we haven't thought about this in depth—to be precise, we haven't thought about it at all." Zhao Zimeng was very excited, "This discovery is very important. ”

"Lin Di, tell me quickly, what problem did you find?" Linghu Yunfei said.

"Yunfei, don't get excited, drive your car." Zhao Zimeng said.

Zhao Zimeng's reminder was a bit redundant, so that Hu Yunfei's car drove very steadily, at night in the south of the old city, people's nightlife had just begun, there were many pedestrians on the street, and the shops along the street were brightly lit.

Zhao Zimeng finally understood why Lin Di asked Xiao Lao: everyone should be able to remember that the deceased's kneecap was divided into several pieces, and the part connecting the leg bone and kneecap was broken into several fragments.

It's easier to do a heavy blow if it is applied directly to the bone, but what if it is applied to the leg covered in flesh?

What kind of force can tear apart the bones that wrap around the flesh? "Splitting" is possible, as for "splitting", I'm afraid I have to consult relevant experts, which is why Lin Di asked to consult Xiao Lao.

Earlier, the author has explained to Xiao Lao Xiao more than once, he is a well-known forensic expert in the country, and Zhao Zimeng will consult him when he encounters thorny problems in the process of handling cases.

Zhao Zimeng was originally going to go to the forensic department of the Public Security Bureau, but now, he decided to go to Che Huating first, and then to Xiao's hometown: "Yunfei, turn around, let's go to Che Huating's house." ”

Ling Hu Yunfei turned the head of the car.

A few minutes later, a group of three people walked into the Chejia compound.

Che Huating asked his wife to call Boss Che.

The conversation took place in the wing room of Che Huating's house.

The brothers said in unison that their father Che Rengui not only had longer calves than his thighs, but also had longer arms than his shoulders, and the story that their father Che Rengui often talked about was to ask a fortune teller for divination, and the fortune teller said that his calves were longer than his thighs and his arms were longer than his shoulders.

After leaving Che's house, the three of them went to the forensic department of the criminal investigation team of the Public Security Bureau, and during the first autopsy, Zhao Zimeng, Ling Hu Yunfei and Xiang Daimo did not measure the length of the deceased's arm. After listening to the words of the Che Huating brothers, Zhao Zimeng decided to measure the length of the deceased's arm.

A few minutes later, Feng Yiming gave an accurate figure: 26 centimeters below the elbow and 29 centimeters below the elbow.

This data is consistent with the statement of the Che Huating brothers. Feng Yiming said that the ratio of the length of people's arms is generally one to one, 26 to 29, which should be a special case.

Feng Yiming also said that according to experience, the arm is three centimeters longer than the shoulder, so the calf should also be a few centimeters longer than the thigh.

Half an hour later, the car drove in front of an alley opposite Qingliang Mountain, and Xiao Lao's family lived in this alley.

Linghu Yunfei parked the car in the open space in front of the alley.

After walking in the alley for two minutes, the three men stopped in front of a cultural center.

The cultural center was full of people, and the voice of a storyteller could be heard inside, and the rhythmic drums were used as accompaniment. The content of the book is about the part where Wu Song asked for a servant to investigate the cause of his brother Wu Dalang's death.

Xiao Lao's family lives in a college south of the cultural center, and Xiao Lao's lover is a professor in this school.

After Zhao Zimeng greeted the doorman, the three of them walked along the boulevard towards the faculty dormitory.

The windows of Xiao's hometown are still lit.

Lin Di didn't ring the doorbell, but knocked lightly on the door three times.

After a while, the door opened.

"Captain Zhao, please come in quickly-rare guest-please come in-Lao Xiao-guess who is coming." The person who opened the door for everyone was a woman in her sixties, he was Xiao Lao's lover and Xiao Luhan's mother Xu Xiaohua.

"I don't have to guess, I already hear you talking." Xiao Lao said as he walked out of the study, "Zimeng, come in quickly." ”

"Professor Xu, it's so late to bother you, I'm really sorry."

"Don't bother—don't bother, Lao Xiao is sorting out some information—we usually rest late."

As soon as Mr. Xiao led the three of them into the study and sat down, Mr. Xu's teacup had already been brought in.

Zhao Zimeng glanced at the writing desk, there were some materials and notes spread out on the desk, Xiao Lao must be in a hurry to write a book.

"Zimeng, say it! What's the problem you're experiencing? ”

"Old Xiao, the case we took over is very strange."

"What's so weird?"

"When we investigated the scene, we found that the deceased's kneecap was divided into several parts, and the bone between the kneecap and the leg bone was broken into several fragments."

"When you surveyed the scene, were the bones crushed and bumped by heavy objects?"

"No, the corpse is hidden in the cracks of the brick wall, there are three brick walls, and the corpse is hidden in the second brick wall, Lin Di, photo."

Lin Di took out more than a dozen photos from his bag.

Xiao Lao took the photo and leaned under the lamp to look at it carefully.

The three of them stared at Xiao Lao's expression.

Xiao Lao returned to the sofa, picked up the teacup, took two sips of tea, and then looked at Zhao Zimeng and said, "Zimeng, you answer me a few questions first, okay?" ”

"Elder Xiao, may you ask."

"When you put together the remains of the deceased, did you miss the fragments of the calf bone?"

"Nope."

"Is there a problem with the ratio of the thigh bone to the calf bone after the corpses are combined?"

"The proportions are moderate."

"Where is the source of the dead's death?"

"On the head."

At the same time, Lin Di handed the autopsy report to Xiao Lao's hand.

After Xiao Lao looked at it for a minute, he said, "Then there is only one possibility." ”

"What is possible?"

"The deceased's calves were longer than their thighs. In general, people's thighs and calves are about the same length, but it is not excluded that in special cases, a very small number of people have lower legs longer than their thighs, which is the same as some people's arms are longer than their shoulders. Xiao Lao said.

If the two tiger teeth are excluded, Xiao Lao's statement is more in line with Che Rengui's physical characteristics, which is getting closer and closer to Xiao Luhan and Zhao Zimeng's thoughts.

"Zimeng, your brain is getting better and better, and your experience is getting richer and richer."

"Elder Xiao, it was Lin Di and your son Xiao Luhan who discovered the problem. We felt they had a good idea, and we came to you. Zhao Zimeng said, "Lu Han reminded us. ”

Xiao Lao continued: "You straighten your legs - put them down naturally, and then touch your kneecaps - and see if your kneecaps can move." ”

The three of them followed Xiao Lao's prompt, straightened one leg, put their feet on the ground, and then touched their kneecaps with their hands, and then moved up and down, left and right a few times.

"Elder Xiao, I understand what you mean." Zhao Zimeng seemed to have an understanding.

"Captain Zhao, tell me about it."

"The kneecap of a person is what connects the thigh bone to the lower leg bone, and when the leg is straight—only with the leg straight, and only in the front, can the kneecap be separated by a weight."

"With the leg straight, the kneecap can move up and down, left and right, and it is difficult to break the kneecap when the kneecap is not fixed. Old Xiao, am I right? ”

"Captain Zhao, what you said is very good; What's more, in the case of flesh wrapping, it is impossible for any heavy blow to smash the knee into several pieces, unless it is a heavy blow from an unconventional object. ”

"—If it's an unusually heavy object, then the kneecap doesn't break into pieces, but crushes."

"Also, there is another source of lethality in the deceased's body - the murderer's only purpose is to kill the deceased, since he has already killed the deceased, why did he hit the deceased's kneecap and the junction of the kneecap and leg bone?"

"Is it to vent the hatred in your heart? It seems that there is no need for this, if the murderer wants to vent his inner hatred, there are many ways to choose, such as hitting the deceased's head and face with a heavy object, and stabbing the deceased in the abdomen with a murder weapon, why choose this position alone? ”

The three of them were eye-opening, and after Xiao Lao said this, the three of them seemed to have some clear understanding of the case.

"Old Xiao, I have a question, I don't know if to ask?" Lin Di asked.

We all know that Lin Di usually doesn't speak much, but as long as she speaks, it must be well thought out. After working by Zhao Zimeng's side for so many years, she has gained a lot of knowledge, and under the influence of Zhao Zimeng, she is more and more able to think about problems.

"Xiaolin, ask!"

"When a person is in a living body—that is, when he is covered in flesh and skin, can a weight break bones?" Lin Di looked at a photo in his hand and said, this photo was taken after the corpses were assembled.

"Kobayashi! That's a good question, actually, I've already answered it, and I'm just not direct enough. In the case of a living body, it is impossible for a heavy object to break the bones wrapped in the flesh - the weight first touches the flesh, and the flesh will break down a lot of force. ”

"Old Xiao, tonight, we took the liberty to disturb you, it was Lin Di who thought of it, she found some problems in this autopsy report." Zhao Zimeng said.

"Since a person is alive, a weight cannot break the bones, how was it that the leg bones and kneecaps of the deceased were broken in this case? Why did the killer do this? Lin Di still had doubts, and the tentacles of her thinking continued to extend into the depths.