On the night of September 28, 2020, it was rainy.

In the north in late autumn, the temperature at night is already less than 10 degrees Celsius.

On a rainy day, the temperature plummeted, and the autumn rain crashed on the doors and windows.

In the dissection room, Lu Chuan was facing a pile of dry bones.

The analysis report on the identification of the bones is nearing completion.

Now, what Lu Chuan is doing is an analysis of the cause of death.

"There are signs of collapse in some of the chest fractures, which indicates that the deceased had suffered a major shock during his lifetime."

Lu Chuan picked up the two ribs, compared them repeatedly, and found some differences.

There is a difference between the broken marks of the two ribs.

One is the crushing indentation, where the weight is crushed, and the force on the sternum exceeds the limit, resulting in breakage.

But the other kind of trace is not a crushing mark, but a crushing mark formed by a violent short-term impact.

The bones were found under the foundations of the highway.

Combined with this scenario, the rolling traces, as Li Kai analyzed, are likely to be caused by the roller pressing the road.

However, there are no chipping marks of the impact in any case.

Unless, the deceased was struck by a vehicle or other high-speed object before his death, then buried in the roadbed, and then run over by a road roller.

In this way, there are two different traces of bone breakage.

However, if it is a vehicle impact, there is a high probability that the broken leg bone will be broken.

The reality is that the sternum of the skeleton has impact marks, but the leg bone is intact.

……

Lu Chuan did every analysis very carefully.

Any conclusion is supported by data, and only such a skeleton identification and analysis report can be convincing and become judicial evidence.

Four thirty a.m.

Lu Chuan, who stretched his waist, took the report from the printer and breathed a long sigh of relief.

Pushing open the window of the dissection room, the fresh air with the unique smell of rain hits the face.

Lu Chuan's somewhat muddy mind was clear, and his spirit was slightly uplifted.

The identification and analysis of the bones has finally been completed.

"Done?"

Outside the breaking room, Li Kai had already gotten the news and came together with Wang Changjiang.

Lu Chuan nodded: "The bones are well preserved, and the instruments of the Tianzhou City Criminal Investigation Detachment are advanced, so the analysis this time is relatively fast." ”

"Great, Officer Lu, thank you so much!"

Li Kai took the report from Lu Chuan's hand and opened his eyes wide with excitement.

However, the content of the report made Li Kai's expression gradually freeze.

"The deceased was ...... before his death Ever been abused? ”

Lu Chuan nodded solemnly: "This can basically be determined, but whether it is abuse or torture, it is difficult to determine now." ”

"What is certain is that the deceased's sternum was struck with a blunt instrument such as a hammer before his death, causing the sternum to shatter."

This is Lu Chuan's final conclusion about the different cracks in the deceased's sternum.

"The ribs on the chest of the deceased have two different fracture marks, in addition to the crushing and crushing marks, there are also marks of impact crushing."

Lu Chuan took the report and pointed to the conclusion to analyze the reason: "It is unlikely that the vehicle will be impacted, because the deceased's leg bones are intact, which negates the possibility of the vehicle causing death and then burying the body." ”

"I just did a bone cracking experiment, and I found that the fracture of the deceased's sternum should have been caused by a hammer or something like that."

"Moreover, there are six fractures on the bones with such marks, which means that the deceased suffered at least six similar blows before his death."

"Generally speaking, only torture or torture will occur, and from the analysis of the degree of bone fragmentation, two of the six fractures are near the heart, two are in the lungs, and the rest are in the left and right lower ribs."

"The ribs in the heart should have been inserted into the heart, it was a fatal injury."

A blunt instrument such as a hammer was hammered, causing the ribs to break and insert into the heart, which was the cause of death determined by Lu Chuan.

"One more point," Lu Chuan flipped the report to the end: "I did a rough analysis of the soil cleaned up on the bones, and found that there was sand and clay on the bones. ”

"This is not normal, because in a burial site, the soil composition should be about the same, and there will not be such a big difference."

"So, I suspect that the bones have been moved, or that the burial site has been changed."

"Of course, the location where the bones were found was under the foundation of the highway, and it is possible to build the highway to transport earthwork from other places, so it is also possible that different kinds of soil will appear."

However, Li Kai shook his head: "I know that the highway was originally rebuilt from a national highway, and the foundation is very stable, so it is unlikely that the earthwork will be transported from elsewhere." ”

Building a highway is not the same as building a building.

Earthwork is basically made of local materials, and it can also form drainage ditches, killing two birds with one stone.

"Officer Lu, Lao Wang, I will hand over this report to the detachment leader immediately, and I will arrange for someone to send you to rest first."

Lu Chuan and Wang Changjiang nodded.

They're just here to provide technical support, not to solve cases.

After staying up for most of the night, Liu Guodong was better, and just waited for Lu Chuan to do the identification and analysis, and rested for a while.

Lu Chuan worked hard for seven or eight hours.

The high concentration of the mind, the complex calculations and analysis, made Lu Chuan very tired.

Lu Chuan and Wang Changjiang returned to the hotel arranged by the criminal investigation detachment to rest, and Li Kai couldn't sleep.

Tianzhou City Criminal Investigation Detachment Case Analysis Conference Room.

The bone identification and analysis report has been sent to the detachment leader Wang Chuanmin.

"The deceased, male, was 1.78 meters tall, weighed 80 kilograms, was 40 years old at the time of death, and had been buried for 16 years."

"There was tophi in the ankle, the tip of the coccyx was more worn than average, the bone density was lower than that of his peers, and the deceased had a sedentary nature of work before his death, lacked exercise, and lived in a better living condition."

"There are six broken marks on the ribs on the deceased's chest, and it is judged that the deceased was abused or tortured before his death."

"The cause of death was judged to be a hammer blow to the chest with a blunt instrument such as a hammer, and the ribs were broken and inserted into the heart, causing death."

"Two different types of soil components, sand and clay, were found in the crevices of the bones, and it is suspected that there are traces of the deceased's body removal after ossification, which should be determined in combination with the soil quality test at the crime scene."

Wang Chuanmin carefully read this extremely detailed report on the identification and analysis of the bones.

After a while, he looked at Li Kai with some incredulity: "This ...... Is it really the analysis report made by Xiao Lu from the Haizhou City Criminal Investigation Detachment? ”

Li Kai smiled bitterly and nodded: "When Officer Lu Chuan did the skeleton analysis, I was always there, and I watched this report come out with my own eyes. ”

"But I don't understand how this report came out."

Every job Lu Chuan does, Li Kai can understand.

Spectral analysis measures the carbon attenuation of bones, and bone densitometry measures bone density......

Every step Lu Chuan makes, Li Kai can say that he can.

But the process of combining these things and coming up with this report after complex calculations, Li Kai couldn't understand it.

"However, I have seen the skeleton analysis report made by Zhang Yuanchao's predecessors before, and Lu Chuan's one, although it is still inferior in some details, but the results of the overall analysis should be fine."

Although Li Kai can't make this report, it doesn't mean that he can't distinguish the truth from the fake.

It's like those experts who identify paintings, you ask him to paint it, and he certainly can't draw it.

But you let him taste the real and fake, and that's fine.

It's like a young boy and girl who fights for the first time, without being taught, where there are strengths and loopholes, they can still find out.

Wang Chuanmin was amazed, but he couldn't care so much.

It doesn't matter how he makes it, he can use it!