After an unknown amount of time, he finally bent over, picked up Zhao Dongsheng, and carried him up the mountain.

At that time, Zhao Dongsheng was still alive, his fingers twitching occasionally, perhaps he was afraid of the grave prepared for him by the murderer, or perhaps he was still eager to struggle back to this world from the darkness.

But as the shovel was inserted into the ground, the soil and rocks were dug up with a crackling sound, and the murderer shoveled the soil to the side, some of which fell on Zhao Dongsheng, and some of which rustled on the fallen leaves.

The blood flowed, blended with the soil, and dyed the dead leaves red.

Like a demonstration of the law of conservation of energy, the soil and fallen leaves became colorful, but Zhao Dongsheng lost his luster and blood color.

He finally stopped moving even a little bit, and as the murderer expected, he truly became a corpse.

…

In the flow image, Jiayi saw the license plate number of the taxi driver, and all the information about him, including his appearance, height, and clothing.

She simply recorded it in the notebook, and then stood in the autopsy room for a long time, enduring the cold, repeatedly watching the flow image, and constantly adding new information.

While taking notes, Jiayi occasionally saw the six points mentioned by Inspector T recorded in the notebook.

She raised her head and compared it with everything she saw in the flow image.

When the murderer's face was illuminated, Jiayi saw that he had ordinary features, sparse eyebrows, big eyes with double eyelids, a slightly flat nose, a slightly wide mouth, and a square face. Although he was not a handsome man, his skin was a little uneven, and his eyes were a little cloudy, but he did not have a special appearance. He

could not be found immediately in the crowd.

When the murderer got out of his car and looked around to make sure that there was really no one at the foot of Jinshan Mountain in the dead of night, Jiayi compared the height of the taxi with the height of the murderer and judged that he was about 1.7 meters tall, neither fat nor thin.

When the murderer Zhao Dongsheng was carried down and carried on his back, walking up the mountain road. Jiayi could be sure that he was not lame and did not have congenital defects such as six fingers.

However, he did look like he was between 20 and 35 years old, or maybe even older, Jiayi could not quite tell.

While taking notes, Jiayi was a little confused.

It seems that the techniques written by the old detectives like Brother Yue in the files and reports are more reliable.

The subject of criminal psychology is probably too new. There are still many unknown areas that need wise people to explore and conduct more in-depth research.

Sighing softly, Jiayi looked at the notes in her hand, and reread the flow image. She carefully observed the physical characteristics of the murderer and kept recording them in the notebook:

his expression was calm, neither fierce nor guilty.

Before choosing the burial site, the murderer carefully observed the terrain and specifically looked for a place that was shaded by many trees, with thick fallen leaves and was humid. First, it would not be easy to be discovered. Second, the thick fallen leaves showed that no one had touched this place for a long time, and it would not be paid attention to for a long time after burial. In addition, the humidity meant that the soil was softer and easier to dig.

The murderer looked very strenuous when digging. Although he had a good physique, he was not very outstanding.

Why did Inspector T say it wrong?

If we want criminal psychology to really guide investigations, and if we want to be able to see clues and outline the real culprit without error, what should we do?

Forensic officer Rick straightened up and wiped the sweat from the tip of his nose with his sleeve. The assistant beside him immediately handed him a tissue to wipe his sweat.

While wiping his sweat, Rick turned his head and looked at the CID agent who came from the West Kowloon Serious Crime Unit.

What a great young girl, why is she sighing at such a young age?

What's troubling her?

"How is it? What's written in the notebook?" Rick was intimidating without being angry. He didn't realize that his casual question out of curiosity looked like a strict parent who asked his children what they had learned this year in front of relatives during the Chinese New Year.

When he first saw Yi Jiayi coming to consult on behalf of West Kowloon CID B Team, he was a little confused. How can such a young person get into CID?

The Serious Crime Unit requires experience, logical reasoning ability, the ability to endure hardships, and the ability to work hard. How did such a young man, and a pretty girl, get in?

With such curiosity, he observed Yi Jiayi and thought she was not bad.

Although the West Kowloon Serious Crime Unit was a bit bold in hiring people, Chung Wah has always emphasized recruiting talents without any restrictions. If you are really capable, it’s okay to be young.

Moreover, such a beautiful and youthful girl was so calm and indifferent when facing the corpse, and she kept writing and taking notes there. Her serious and rigorous work attitude not only dispelled his doubts, but also made him identify with her. It

is rare for young people to do things without distraction and not be afraid of heavy work.

Jiayi looked at the information that could be disclosed in the notebook, and did not notice the stern look of Brother Rick. She just made a simple summary in a serious manner:

"Height, foot size, arm length, wound depth, knife stab angle..."

"Well, we will reflect these in the report later. You don't need to write them down in the notebook." Brother Rick raised his eyebrows, walked to the chair, sat down and stretched his arms to take a break in the middle of the dissection.

"It's mainly to provide some information to assist in reasoning." Jiayi thought for a moment, and answered Rick's questions in a gentle and patient voice:

"For example, height, arm length, stabbing angle, and wound depth can be used to roughly infer the murderer's height, physique and other information.

"For example, a woman with less strength could not have inflicted the fatal injury suffered by Zhao Dongsheng, so it can be inferred that the murderer is a man or a very strong woman.

"Furthermore, judging from the angle of the wound, the murderer should be taller than Zhao Dongsheng. Zhao Dongsheng is five feet two inches (174cm) tall, so the murderer must be taller than this size.

"If there is a deviation between these clues and the clues deduced by our CID, then it is very likely that there is something wrong with our reasoning, or the murderer is in a special and unusual situation." "

Very interesting. "Brother Rick nodded, his eyes curved a little more, and suddenly asked: "How old are you?"

The assistant standing behind Brother Rick raised his eyebrows slightly. Brother Rick himself might not have noticed it, but everyone else noticed it. When he spoke to Yi Jiayi, his tone was surprisingly gentle, like a kind elder facing an admiring younger person.

The assistant turned his head to look at Yi Jiayi, and couldn't help but sigh: This female police officer has won the favor of the older superiors so quickly, she is quite amazing.

"Ah?" Jiayi was stunned for a moment, and was about to answer, but Brother Rick spoke first.

"You have tight skin, sufficient collagen, a considerable amount of hair, a curious and lively look in your eyes, and a casual manner. When you talk, you unconsciously smile. It can be judged that you are between 18 and 28 years old.

"Then, based on the preliminary observation of your skull shape, the growth ratio of the three-thirds and five-eyes, the degree of drooping of the eye corners, the age of the wrinkles at the end of the eyes after taking into account the attribute of laughing, the length of the philtrum, the clarity of the lip line at the corner of the lip, the dynamic muscle memory traces of the masseter muscle at the corner of the lip... and the condition of your teeth when you speak, and the analysis of the muscle and bone morphology that the teeth will affect...

"You should be between 19 and 22 years old, am I right?"

Jiayi slightly widened her eyes and nodded:

"Is there such a technology in forensic medicine that can determine a person's age by observation?"

Then can she rely on Brother Rick's method to determine the murderer's age?

Thinking of this, Jiayi looked at Brother Rick with an urgent look, and her pupils were even brighter under the light.

Are those eyes bright?

No! That is a burning desire to learn.

Brother Rick was pleased with her expression and shook his head and said:

"I have personally done in-depth research on the physiognomy of Chinese people. It is purely a personal interest.

"You just need to find enough photos of men and women of different ages, keep observing, comparing and analyzing, and it is not difficult as long as you are attentive and hardworking. "

"Will Brother Rick share courses in this area? "Jia Yi's emotions were high, and she couldn't help but hold the notebook against her chest with both hands. The look in her eyes when she looked at Rick also changed. He was indeed a young man with eyes full of curiosity and agility.

"Sure, if I have time to do such a sharing class in the future, I will ask my assistant to call the West Kowloon Serious Crime Unit and invite you to come and listen. "Rick raised his head slightly, with a smile that was full of joy and satisfaction.

Just now, Jiayi showed off her professional knowledge of CID, which impressed Rick.

Not wanting to be outdone, Rick couldn't help but show off his professional knowledge of forensics.

Men have a strange desire to win.

However, the simple Jiayi didn't realize that Rick was being tricked by her, but responded humbly and actively.

Rick felt a little embarrassed, so when Jiayi was about to leave the Central Police Station and return to the Yau Ma Tei Police Station, Rick Rick specifically asked his assistant to print out all the existing reports and test sheets and hand them over to Jiayi.

At the same time, he personally accompanied Jiayi to the Forensic Department and urged Teresa to put down her work temporarily and organize the reports and test sheets that had been issued, and let Jiayi take them back to the Serious Crime Unit.

Jiayi kept looking around on the way, and finally found a person in the Forensic Department who looked very similar to the murderer in the mind flow image she saw.

She quietly asked Brother Rick, "Brother Rick, if a person looks like that, how old is he? "

Fortunately, the murderer didn't really look weird as Inspector T said, but had a common face, so she could immediately find someone similar.

"That kind of face, look at the degree of graying of his hair on the temples, and the forehead wrinkles, the 川-shaped wrinkles between the eyebrows, the wrinkles at the corners of the eyes, the smile lines on the lips, and more than one layer of bags under the eyes. These are actually caused by sagging skin. In addition, the subcutaneous tissue of the apple muscle is sunken and drooping. So even if he is in normal condition, you will still feel that he looks more tired than young people... This feature is probably around 40 years old. Of course, heavy smoking, lack of exercise, drinking, excessive exposure to the sun, and lack of sleep may cause several years of discrepancies in the observation method. You can integrate these elements and it will be fine. "Because Jiayi asked questions very humbly, Rick's answers were also very detailed.

Jiayi wrote down the notes quickly, and was very moved. When she reached the door of the Central Police Station, she kept thanking Rick, showing her great respect and love for Rick.

If he had not been rational, Rick would have almost driven Yi Jiayi back to Yau Ma Tei himself, but fortunately he held back.

It's not appropriate, it's not appropriate.

After bidding farewell to Yi Jiayi, Rick returned to the autopsy room to continue the overtime autopsy in the second half. After the work was finished, he really contacted Superintendent Sun of the Central Police Station to communicate about the forensic blindness sharing class for all police officers in the district.

Unknowingly, Yi Jiayi helped all the detectives to obtain an excellent knowledge-oriented benefit.

...

Yi Jiayi saw the murderer in the flow image, but this person was indeed not among the people the police had investigated so far. After

returning to the police force to reunite with Sir Fang, they had dinner together and were arranged to take Xu Shaowei to Jinshan to squat.

During dinner, Tannen wanted to get to know the B-level detectives, become friends with everyone, and understand everyone's habits. Maybe they could get along smoothly and control the team.

But when it was almost time for dinner, when Tannen rushed over, he found that in order not to delay the squatting mission at night, the detectives had already left the police station and divided into groups to solve the dinner problem.

Tannen was ultimately unable to catch up with everyone else.

In the evening, Qiu Susan helped find Inspector Zhang of Group A, and transferred Teacher Tony, who had extensive experience in squatting, from Group A to take Tannen, who had no experience in squatting and who might be exposed if no one was watching, to squat on Gu Xiaolan.

At the same time, Qiu Susan applied again and transferred a senior sister over to pretend to be Gu Xiaolan's friend, and stayed with Gu Xiaolan in a hotel suitable for squatting and defense.

Group B also benefited from this, and no longer had to keep an eye on Gu Xiaolan, and they could all take turns squatting on the Jinshan corpse dumping site.

Excluding the older Uncle Nine, a young Xu Shaowei was added, and there were still 6 people.

As the number of people increased, they were split up and scheduled, and each agent could rest after squatting for 4 hours, which greatly improved their happiness index.

Before leaving with Xu Shaowei, Jiayi asked Fang Zhenyue with some concern:

"Since the murderer is a stalker and a super fan, after following her for two years, he might know more about Gu Xiaolan's interpersonal relationships than we, the police, do. Suddenly there is a strange face next to Gu Xiaolan. Wouldn't the murderer realize that the man was sent by the police to protect Gu Xiaolan?"

I always feel that letting Inspector T do this would alert the enemy, which is not very appropriate.

"The police department wants to introduce advanced foreign technology, and this time they have recruited several experts from abroad. As a team in the police force, we should also cooperate with the plans of our superiors and try to integrate high-tech to solve cases. "

After Fang Zhenyue finished his high-sounding words, he continued:

"It's not necessarily a bad thing. It's normal to make a fuss over there, but the murderer doesn't know how much the police know. He is eager to hide himself, and he will want to bury the body as soon as possible to hide himself better.

"Then, we should be able to wait for the murderer earlier.

"Starting now, Team B will keep an eye on the body 24 hours a day. We will catch him eventually."

Jiayi nodded and asked, "Brother Yue, did you plan any new strategies in the meeting?"

"Today's surveillance mission will proceed as planned. Inspector T will be responsible for protecting Gu Xiaolan. While he observes everyone who appears around Gu Xiaolan, he can also do some personnel screening based on his profile of the murderer. We will work on both fronts, make a report together tomorrow, and then consider the next strategy."

"Understood, Brother Yue. "Jiayi nodded, it was quite reasonable.

However... it was really hard to wait in the mountains at night in late autumn. If she couldn't find the murderer within three days, she would have to find a way to expose the murderer's license plate number and other information to everyone.

But that would be very troublesome, so she still hoped that the murderer would show up soon as Brother Yue said.