Tianzhou City is the second largest city in the province, only worse than the provincial capital.
But its economic development is much stronger than that of Haizhou, and its population is also larger.
Wang Changjiang is no stranger to the Tianzhou City Criminal Investigation Detachment.
In the past twenty years, the Haizhou Criminal Investigation Detachment has repeatedly requested technical support from the Tianzhou Criminal Investigation Detachment.
Wang Changjiang and Li Kai, the forensic doctor here, are classmates and have had professional exchanges and studies.
However, when Wang Changjiang came to Tianzhou City before, he didn't say he was acting in a low-key manner, but he definitely had to be low-key when asking for help.
Unlike now, Li Kai was by his side with an extremely unnatural smile, and Wang Changjiang's head almost reached the sky.
"Old Li, I remember that the equipment in your forensic laboratory is better than ours, and they are all imported."
Wang Changjiang clicked his tongue: "We came to visit last time and wanted to buy it, but unfortunately we couldn't afford it."
Li Kai looked at his old classmate speechlessly: "I asked you to come to the Tianzhou Criminal Investigation Detachment, but you gave up on your own."
Wang Changjiang glared at Li Kai angrily: "Yuelan's family is in Haizhou, can I come to Tianzhou?"
Lu Chuan just followed and didn't say much along the way.
He could see that Li Kai and Wang Changjiang had a good relationship.
"You were carried away by love."
cut!
Wang Changjiang gestured with his middle finger: "Come on, let me introduce to you the investigating detective of our Haizhou Criminal Investigation Detachment, Lu Chuan."
"This is our technical master, an expert in skeletal identification."
Of course Li Kai knew Lu Chuan, and it was Lu Chuan who Zhang Yuanchao recommended to help them conduct skeleton identification and analysis.
However, he did not expect that Lu Chuan was so young.
He looks like a recent college graduate.
"Officer Lu is really young and promising. To be praised by Mr. Zhang, the number one forensic doctor in the provincial department, you are the first in our province."
Lu Chuan's smile was gentle: "Forensic Doctor Li, you're welcome, just call me Xiao Lu."
"I just did a little research on the identification of skeletons, and the forensic doctor Zhang Yuanchao was very complimentary."
Li Kai waved his hand: "Forensic doctor Zhang Yuanchao once worked in the Tianzhou City Criminal Investigation Detachment. He was recognized by him and recommended to help us conduct skeleton identification and analysis. Officer Lu does not have any research."
Li Kai obtained the skeleton identification and analysis report made by Lu Chuan through Li Changgeng of the Provincial Technical Identification Center.
To be honest, he didn't believe at all that this was an appraisal made by someone other than Zhang Yuanchao.
What's more, the other party is not even a forensic doctor.
"Lao Li, don't be polite, let's talk about the case first."
Wang Changjiang looked serious: "We have come with orders this time, and we must do our best to assist you."
"For so many years, the Tianzhou City Criminal Investigation Detachment has provided us with support. This time it can be considered a small favor from us."
The world's criminal investigation team is one. Let's not talk about technical exchanges. Arrests across regions are common.
The criminal police from any detachment have done this for several days and nights in a car.
Therefore, for things like support, as long as you are busy, there is no reason to say no.
Speaking of the case, Li Kai's expression became serious: "The skeleton was discovered yesterday afternoon and dug out by an excavator during the reconstruction and expansion of a highway."
"The skeleton is in the autopsy room. We have completed the skeleton restoration, but no obvious problems were found."
Li Kai introduced them and took Lu Chuan and Wang Changjiang to the anatomy room.
On the steel dissection table, a skeleton lay flat.
Lu Chuan put on three layers of gloves and carefully observed the condition of the skeleton.
"Been run over?"
Although the skeleton has been restored, the two ends of the sternum have broken and collapsed, and the entire chest can no longer support it.
Li Kai nodded: "We have conducted a carbon attenuation analysis on the skeleton and determined that the burial time should be at least fifteen years ago, which happened to be the time when the highway was built."
"We suspect that the deceased was buried first and then crushed by a road roller during the process of compacting the road surface."
Lu Chuan walked around the body and observed carefully: "Has the identity been confirmed?"
Li Kai shook his head: "We extracted the DNA information from the bones and compared it with the missing persons database, but without success."
"So, we want to determine some physical characteristics of the owner of the skeleton through skeletal identification and analysis to see if we can confirm the identity."
After a brief investigation, Lu Chuan visited the Tianzhou City Criminal Investigation Detachment Forensic Laboratory.
To be honest, Lu Chuan was shocked.
As Wang Changjiang said, the Tianzhou City Criminal Investigation Detachment... is rich!
Take a look at the equipment in this room, including spectrum analyzers, automatic bone density detectors, bone age carbon attenuation analyzers, and variable frequency laser scanners...
With these things, Lu Chuan's skeleton identification and analysis time can be shortened by half.
Li Kai proudly introduced the functions and prices of various instruments.
There was a mixture of pride and shame in his expression: "There are many things, and we all use them, but our ability to do comprehensive analysis is not good."
"When encountering a case like this, we can only ask for support from above."
After learning about the equipment, Lu Chuan began to analyze the bones in detail.
The first thing is to clean up the bones.
Because they had been buried, the bones were stained with some soil.
Before doing the skeleton identification, Lu Chuan had to clean up all the skeletons.
At the same time, the cleaned soil must also be tested for soil quality.
Lu Chuan took out a small brush from the discovery box and carefully cleaned the bones.
Of course, this small brush is not a LV brand brush.
It is a brush made of pig hair. The hair is hard and suitable for cleaning soil.
Although this work was very tedious, Lu Chuan did not let anyone help.
Every detail must be observed by Lu Chuan.
"The angle of the pubic symphysis...is less than 70 degrees, and the gender of the skeleton is determined to be male."
The male sacrum is long and narrow, and the angle of the pubic symphysis is between 60 and 70 degrees.
The female sacrum is short and wide, and the angle of the pubic symphysis is between ninety and one hundred degrees.
Of course, Li Kai and the others had already made these basic determinations.
"The bone age carbon test and analysis determined the bone age to be fifty-six years."
"Bone wheel observation analysis shows that the deceased's age at the time of death was...forty years old."
When judging age, Lu Chuan also took into consideration some other circumstances.
Such as hip osteophytes.
Adult bones generally develop growths after the age of thirty, and more growths occur on the hip bones.
He was forty years old when he died, and the skeleton existed for fifty-six years, which means that the deceased died sixteen years ago.
"There are fossil-like wrappings on the feet and ankles. The deceased suffered from gout during his lifetime..."
"The bone length... was 1.76 meters. The height before death plus the thickness of skin and flesh... was 1.78 meters."
The height of human bones is shorter than the height before life. In addition to the thickness of the flesh and blood of the feet and the thickness of the scalp, the fascia in the joints also has thickness.
After the skeleton is turned into a skeleton, these things will disappear.
"Analysis of bone density combined with height: the deceased weighed 80 kilograms, and the bone density was two percentage points lower than the average level. Combined with age analysis... the deceased lived in excellent living conditions... lacked exercise for a long time."
"The average level of flattening of the tip of the tailbone is worse than that of the average person...the deceased had been sitting for a long time before his death..."
In this time, Lu Chuan fully demonstrated his intermediate skeleton identification and analysis skills.
Because of the high integrity of the skeleton, the information about the deceased was far more comprehensive than the identification and analysis of the skeleton in the hot pot restaurant done by Lu Chuan.
"As for the cause of death..."
Lu Chuan picked up two sternums and compared them carefully.
