Two young forensic doctors led the group to the office area.

Turn on the projector and show a photo on the screen.

"Through autopsy and autopsy, we found that the deceased had obvious choke marks on his neck, and multiple places on his brain and body were stabbed with blunt objects.

In particular, near the temples of the deceased, there were multiple punctures, and the wounds were of the same shape. There were also multiple skull fractures 0.5 cm long, which we judged to be also caused by blunt instruments.

Since no tools were found at the scene, we... The section chief and most of them are also not there, and we are trying to judge what kind of tool the murder weapon is..."

"I'll take a look at the photos. ”

Jiang Yining temporarily interrupted the forensic doctor's words, asked for the photo, looked at it carefully, took the steel ruler again, compared it, and raised his head and said, "Flat header." ”

"What... What?" the young forensic doctor was stunned.

"0.5 cm long, 0.1 cm wide skull fracture, the deceased and the murderer are acquaintances, the two went to the remote scene, the deceased did not have any suspicions, it can be seen that the murderer's tools of crime are relatively small and can be carried. ”

Jiang Yining pointed to the photo and said: "Look at these penetrating wounds, they are also irregular circles with a maximum diameter of 0.5 centimeters, and these fractures are 0.5 centimeters long and 0.1 centimeters wide quasi-rectangular.

It can be seen that the head of the murder weapon is flat, and the back is cylindrical, and it can be carried around, that is, in a pocket. Personally, I think that the murder weapon is a flat-headed driver.

However, the thing of a flat-headed driver is too universal to be used as a clear direction to judge the murderer's occupation,... Please keep talking!"

"Oh, good!"

The young forensic doctor was stunned for a moment before he nodded hurriedly.

Lin Hong and the others, who were seated, looked at each other.

They had already seen Jiang Yining's extraordinaryness in the supermarket owner's suicide before, but it was the first time they had seen Jiang Yining intervene in the analysis of the homicide.

As soon as the connoisseur makes a move, he will know if there is one.

Jiang Yining only glanced at the photos a few times, and firmly confirmed the tool of the crime, and judged that it was impossible to deduce the identity of the murderer based on the tool alone, as if he had opened the perspective of God.

A man who is proficient in all aspects is so terrifying!

In the future, should I also find some forensic textbooks to learn? Lin Hong and the others couldn't help but think.

“... After an autopsy and autopsy, we determined that the deceased was 161 centimeters tall, female, with long chestnut hair, and no objects on his body that could point to his identity, and the time of death was known. ”

The young forensic doctor finally said: "What is urgently needed to know at present is to infer the age of the deceased, but to judge the age through bone comparison, this... It's complicated, only our Section Chief Ding has experience!"

"Comparison?"

Jiang Yining frowned and asked: "Judging age by bones, there are collarbones, ribs, sternum, pubic symphysis, plus one is inferred from tooth wear, which one do you choose?"

"Shame... Pubic symphysis!"

At this time, the young forensic doctor seemed to have a feeling of being asked by the teacher in class, and said embarrassedly: "But we haven't mastered this kind of comparison yet, at present, only our section chief has experience, and there are several others, to be honest, our section chief is also hand-born, and most of them are sent to the technical center to do it." ”

"So you're just taking the pubic bone and comparing it with the samples in the model library to determine the age,...... Don't you have a formula?" Jiang Yining said in surprise.

"Count... And the formula?" the two medical examiners asked in shock.

Well, the non-original world, limited capabilities.

Jiang Yining shook his head and asked, "Where are the bones of the deceased, can you take me to see them?"

"Okay, follow me. ”

The two forensic doctors glanced at each other, perhaps shocked by Jiang Yining's casually exposed hand, and finally nodded, led a few people to the examination room, found out the pubic joint of the deceased and said, "That's it!"

Jiang Yining put on his gloves, took the two pieces of boiled and clean pubic symphysis, brought them to the light, and observed them carefully.

"Eh, why do you have to use the pubic bone to infer the age, and the other bones can't work?" The police officer who followed Lin Hong asked Jiang Yining boredly.

Jiang Yining glanced at him and didn't bother to answer.

A forensic doctor explained: "Because the pubic bone is located in the anterior lower part of the human hip bone, that is, in the middle of the legs, close to the shame part, the pubic symphysis is the bony surface of the pubic bone on both sides.

After the human body enters puberty, the shape of the pubic symphysis will change with age, and it will show a strong regular change.

Moreover, compared with other bones, the position of the pubic bone in the human body makes the morphological characteristics of the pubic symphysis rarely changed due to external influences, so it is the first choice for forensic doctors to infer the age through the comparison of the pubic symphysis. ”

"I see. ”

After some explanation by the young medical examiner, it dawned on the police officer.

As he spoke.

Jiang Yining suddenly raised his head and beckoned, "Give me paper and pen!"

The young forensic doctor hurriedly took a pen and paper, and Jiang Yining looked at the pubic bone while writing and calculating on the paper.

It didn't take long for Jiang Yining to put down his pen and speak: "The age of the deceased is inferred to be between 22 and 24 years old, and my personal judgment is about 23 years old. ”

"Are you sure?"

"Really?"

Hearing this, Xiao Weiyuan and Lin Hong were both surprised, and asked one after another.

The two forensic doctors looked shocked and couldn't believe it and asked, "Detective Jiang, you... Is it reliable, and it doesn't compare with the samples in the database?"

"Comparison is still going to be compared, this is just my initial judgment. Jiang Yining said.

"Just write and calculate, Detective Jiang, you... How the hell did you do that?" the two forensic doctors asked with a thirst for knowledge.

"Then I'll tell you the formula. ”

Jiang Yining said calmly, although he is not a police officer now, he is very willing to spread this formula that was common in the original world in this world.

"You see, there are nine reference points for the morphological characteristics of the pubic symphysis:

Symphysis sulcus, ossified tubercles, lower end of symphysis, ventral bevel, dorsal margin, ventral margin, oblique margin, symphysis morphology, symphysis bony. ”

Jiang Yining pointed to various places on the pubic symphysis and explained one by one:

"The characteristics of these reference points are closely related to the change of human age, such as the symphysis groove will gradually become flat with age, from high to sharp, and the bone mass of the symphysis will become more and more loose.

So through a lot of analysis and research, we can score these nine places, and I'll write them down for you,... For example, ossified nodules are 0 points if they do not appear, 0.88 points if they appear, and 0 points if they disappear from fusion.

Then there is a formula, Y=M+X1+X2+X3+X4+X5+X6+X7+X8+X9,

Y is the age, M is Changshu, male M is 16.45, female M is 15.32, X1~X9, which is the grade score of the nine reference points.

Finally, according to the score scale, each X is substituted respectively, and the age of the deceased is obtained, you look at the two pubic symphysis,... So, my calculation is 23 years old, and the demarcation range is between 22~24 years old!"

Looking at the formula written by Jiang Yining on the paper and the two score sheets, Lin Hong and Xiao Weiyuan looked at each other, unaware of it.

"What if... If this formula really works..."

And the two forensic doctors were red with excitement, as if they had witnessed a historic moment, and they couldn't help but jump.

"Detective Jiang, did you summarize this formula? Take me as an apprentice!"

——

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