He can accept that his team members don't have the talent to solve crimes, and even young people are sometimes impulsive, and forgetting the rules is not a big deal, these things can be taught.

But what Chen Jianbin can't tolerate the most is that his subordinates lie!

When the criminal police solve the case, it is normal for some details not to be discovered due to various reasons such as ability and environment, but lying is not tolerated in any case.

In the investigation process of any case, all inferences need to be supported by evidence, even if there is no evidence, there must be a logical reasoning process.

And Song Chuan only stayed at the scene for a few minutes, and didn't even look at the body carefully, and made an analysis of the suspect's gender, height, weight, and even personality traits, isn't this nonsense?

"How did you determine this information?"

Chen Jianbin 's voice was as low as muffled thunder, accompanied by black clouds covering the sky, and there was a sense of oppression that was about to come from the storm.

In fact, these judgments made by Song Chuan are, on the one hand, the conclusions directly reached after the super criminal police experience card is loaded, and part of them are the psychological profiles of the suspect made by Song Chuan on the criminal psychology knowledge he learned at the Public Security University.

Song Chuan did not hesitate and immediately began to explain.

"Team Chen, the deceased at the scene of the crime is a male, about 35 years old, 1.74 meters tall by visual inspection, there are 36 knife marks on the desktop, wall and sofa at the scene of the crime, judging by the shape of the knife marks, 20 of them were left by the deceased holding a fruit knife, and the remaining 16 were left by the murderer using the sharp knife at the deceased's feet."

"The height of these chopping marks is probably the same, from which it can be inferred that the murderer's arm length and height are similar to those of the deceased, plus the chopping marks left by the sharp knife are obviously deeper than those of the fruit knife, and the puncture wound on the deceased's neck is clean and powerful, indicating that the murderer is more likely to be a young man."

"Based on this information, it is basically judged that the murderer should be a young and middle-aged man, with a height of between 1.73 and 1.75 meters."

Chen Jianbin was stunned for a moment, and looked at Song Chuan with incredulity in his eyes: "How did you find these details?" ”

As for the judgment of the height and age of the deceased, it is not difficult for a more careful person to make a more accurate judgment, but there are 36 knife marks at the scene of the crime...... How did Song Chuan count it?

Not only did they count it, but they also judged the gender, age, and height of the murderer based on the shape of these knife marks?

Of course, theoretically speaking, this is not impossible, but this requires detailed data collection and analysis of these knife marks, a large number of calculations, professional judgment, and even simulation with mathematical models, which Song Chuan can see at a glance?

You know, Song Chuan didn't stay at the scene of the crime for a few minutes just now.

Song Chuan touched the back of his head and smiled a little embarrassedly: "Team Chen, I am naturally sensitive to numbers, and I like to delve into books on criminal psychology after my death in school, so I ......"

Song Chuan didn't explain it very clearly, the key is that it can't be explained clearly.

Chen Jianbin took a deep look at Song Chuan and continued to ask: "In addition to the information of gender, age, and height, what about the other information?" ”

"How do you know if the killer is injured or if his left hand is injured?"

Song Chuan secretly breathed a sigh of relief, and then explained: "Team Chen, just now at the scene of the crime, I found three round blood droplets on the ground on the edge of the deceased's right hand, because the fatal injury of the deceased was a ruptured carotid artery, and the blood flowed out to form a jet-shaped blood stain, plus the other four knife wounds of the deceased were covered by clothes, and the blood did not flow out after infection, then these three round blood droplets are likely to be left by the murderer, and at the same time, I found that there were residual blood stains on the fruit knife used by the deceased, which means that the other party is likely to be injured." ”

Chen Jianbin nodded, he had also discovered this detail, and had arranged for the on-site investigation to collect blood for testing.

"The blood stains that can form circular marks must be dripping vertically, and the details of the splash from the size of the blood stains, combined with the height of the murderer, can be calculated to be about 60 centimeters to 70 centimeters of the height of the dripping blood, and this height can determine that the part of the murderer's injury should be below the elbow."

Chen Jianbin nodded seriously again, Song Chuan's analysis is very reasonable, and the blood stain analysis can indeed analyze the height of blood dripping according to the shape of the blood splash, but this is generally calculated by the computer, and Song Chuan came to a conclusion at a glance?

This kid...... Is it so violent?

No wonder wanted criminals can be arrested on the bus, Song Chuan is really different from ordinary people.

"Left hand, why do you think the murderer was injured on his left hand?"

"Because the murderer is left-handed!"

"Left-handed?"

"Yes, the murderer is left-handed, there is a lot of evidence to prove this, such as the sharp knife left a slashing mark, which is from the upper left side of the invading diagonally, and the puncture wound on the deceased's neck is also on the left side of the deceased's neck, and the last point is that the round blood stain left by the murderer is on the right hand of the deceased, if the other party is injured on the right hand, with the two standing positions facing each other at the time, the blood should drip on the left side of the deceased."

Chen Jianbin looked at Song Chuan at this moment, his eyes were already full of shock!

How is this possible?

Song Chuan is just a newcomer who has just joined the company, but why does Song Chuan feel like an old criminal investigation master who has mastered all the criminal investigation skills to Chen Jianbin at this moment?

Forehead...... It's not right, if the old criminal investigator wouldn't go up, he would have grabbed people's necks and wanted to arrest the onlookers.

"In addition, I saw that there seemed to be some bloodshot skin in the nails of the deceased's right index finger and middle finger, which is likely to be in the fight between the two, and the deceased scratched the murderer's exposed skin, so the murderer should have scratches on his body!"

This is the characteristics of the murderer that Song Chuan deduced and analyzed after using all the traces of the scene after using the super criminal police experience card.

"What about personality, what basis is there for the inference you infer the murderer's personality as an introvert and taciturn?"

"Footprints!"

"Footprints?"

"Yes, it's footprints, footprints determine a person's standing posture, and the standing posture can reflect a person's personality traits, the footprints left by the murderer in the office, in addition to the messy footprints left during the murder attack, I found that there are the same multiple footprints in the corner of the door, which shows that the murderer has entered this office many times, and every time he stands against the wall and stands at the door."

"The other party entered the factory director's office and stood in the corner of the door, from a psychological point of view, this is a manifestation of the other party's weak personality and insecurity, most of these people are silent, similar to what we call a typical honest person."

"Then why did you go to the onlookers to arrest people?"

Song Chuan scratched his head again, and his smile was slightly embarrassed: "This ...... A lot of murderers in the TV series will come back to the scene to watch the police solve the case, so I wonder if it is possible for the murderer to come back as well......"

"TV series?"

Rub, you're kidding me, aren't you?