Zhang Zhen has solved the case for many years and has a keen sense of smell at the crime scene. Just like a doctor will habitually observe other people's complexion wherever he goes. This is a professional habit.

Therefore, the powerful criminal police have encountered too many cases, so they can have an understanding of the criminal's psychology and activities. After arriving at the crime scene, they will put themselves in their shoes and think about what they would do on the scene if they were criminals. The criminal police will quickly find clues based on their experience and then infer the process of the criminal's murder, which Su Tao does not have. After all, they have specialized in their profession.

Many people say that traditional Chinese medicine is empiricism, but in fact, all walks of life have their own empiricism.

Although the miscellaneous forest is large, Zhang Zhen can judge the place where the murderer transferred the victim from the terrain based on his years of experience as a police officer. His location is behind a rockery made of rockery and can only enter one side. Therefore, it is difficult for people outside to see here at a glance. The grass quilt at the entrance of the passage is more tender than that in other places.

Zhang Zhen squatted on the ground, pointed at a stone, and whispered: "Look at this place!"

Su Tao walked over and looked at it, and found a silver ring embedded in the gaps of the stones.

Jiang Qinghan took out the gloves he carried with him, then took out the ring and put them in a transparent plastic bag of evidence, and sighed: "This should be the distress signal left by the deceased after being controlled. If he received the news of his disappearance and went to the woods to find the ring, he might have the chance to find her whereabouts. You can check who left the ring later."

Zhang Zhen shook his head regretfully and smiled bitterly: "It's just a ring, it's hard to have any value."

Jiang Qinghan shook his head and said, "Since the victim has been here temporarily before his death, he will carefully look for other valuable things that should be left behind."

Recently, there were two victims at Hanzhou University. The time of disappearance is now half a year, but this place still gives the investigators enough room for imagination.

"It seems that there is blood here." Su Tao pointed to a sharp stone at the top and frowned. There was a black spot on the stone. In the eyes of normal people, they would think that this was a natural mark of the stone. However, Su Tao knew what the blood would look like if it was attached to the stone for more than half a year.

Jiang Qinghan put the stone in his palm and observed it, sighing: "It should be confirmed that it was the female college student named Tian Lina. When the forensic doctor examined her body, he found several old injuries that were hit by blunt objects, which were obviously different from other wounds."

Zhang Zhen gritted his teeth with hatred and said, "This guy is so crazy. He dares to do such a cruel thing on the university campus."

Su Tao sighed and analyzed: "Not surprising, this murderer is a serious psychological pervert, enjoying torture and abuse of corpses. Moreover, he has committed the crime for a long time and has a wide coverage. Not only does he commit crimes in Huainan Province, but he is very likely to be active in other provinces and cities."

Zhang Zhen nodded and said, "We will retrieve similar cases across the country later. If the methods are similar, then we will deal with the case together. This murderer must be brought to justice as soon as possible."

The three of them searched around the rockery for a while, but found no more clues. The murderer was an extremely cunning person, and it was already negligent to leave the ring.

In order to avoid alarming the enemy, the three of them told the school without making any big fuss that the victim had once hidden in the miscellaneous forest.

Then the three of them came to Jinheng Business District again. They visited the shops where the victims had been. The two victims were both gold-medal salesmen in internationally renowned luxury goods stores. However, because there was too much traffic, they did not find clues to solve the case.

After returning to the Public Security Bureau, Zhang Zhen arranged for his subordinates to analyze the evidence. Su Tao and Jiang Qinghan did not leave, but chose to stay and wait for the preliminary report results.

It will take at least one week to get a complete result, because many data need to be drawn through chemical experiments, and only preliminary conclusions can be found for the time being.

About an hour later, Zhang Zhen walked into the office with the preliminary test report and said excitedly: "The identity of the owner of the ring has been confirmed. It is indeed Tian Lina. As for the blood on the stone, it is also left by the deceased."

Jiang Qinghan analyzed excitedly: "Since the murderer was able to find the miscellaneous forest as a temporary hiding place, it proved that he was very familiar with and understood the situation of the Fenhe Campus of Hanzhou University. One possibility was that he was smart enough to make sufficient plans before starting the action, and the other possibility was that he was a faculty member of the Fenhe Campus, or had lived in the Fenhe Campus for a period of time."

Zhang Zhen followed Jiang Qinghan's logic and continued to reason, "The murderer had killed people in various cities across the province before, but now he has come to Hanzhou. Is there such a possibility that he is a faculty member who has just entered the university? If he is a faculty member, it is in line with Dr. Su's previous analysis. The murderer's life rules are from 9 to 5, and he is a civil servant or a staff member of a public institution."

Jiang Qinghan continued: "If the murderer is a university teacher, it would be reasonable. The mobility of university teachers is considered to be among the higher public officials, and there will be teacher exchanges or academic visits between schools."

Su Tao reminded: "Of course, there is another possibility that he is not a teacher, but an ordinary staff member."

Zhang Zhen's eyes lit up and said, "The situation is much clearer now. Hanzhou University can provide a list of newly hired faculty and staff members who have exchanged academic visits in the past year, and then use the criminal portrait to narrow the scope."

Su Tao remained silent, not because he had disagreements, but because he felt that Jiang Qinghan and Zhang Zhen’s divergent thinking was too terrible.

After all, professionals are professionals. Although they have made some efforts in several cases, the actual persons who solve the case are still these criminal police officers with rich experience and great imagination.

As a criminal policeman, you must learn to reason with divergent thinking on a reasonable basis. Only when the detailed reasoning is, can you grasp the clues of continuing to investigate.

Seeing that Su Tao did not speak, Jiang Qinghan said strangely: "Do you think our direction is wrong?"

"No, I just think you are too powerful. I will definitely be a good citizen who abides by the law in the future. Any violation of the law and discipline cannot escape your claws." Su Tao joked and said.

Jiang Qinghan smiled slightly and said, "Thank you for your help. Your thinking has helped us find a breakthrough. We have been confused before, but because of your reminder, we went to the Fenhe campus and didn't expect to find so many things we didn't notice before."

Su Tao smiled and said, "This is the issue of angle. As a criminal policeman, you will focus on evidence and study the criminal's criminal psychology. However, criminal psychology is full of personality and differences. And I am a doctor, and I will consider more commonalities in the minds of the people and find breakthroughs from commonalities."

Jiang Qinghan turned around and said it was already late, at 5:40, he wondered whether to let Su Tao leave, and he must work overtime.

In fact, she is still on sick leave and doesn't use it to work. The main reason is that the superiors are rushing and the pressure is too great. The provincial department has arranged a group to supervise her. As the deputy director of the criminal police team, she must set an example and fight side by side with her colleagues.

Of course, Jiang Qinghan's situation is different from the one who did everything himself at the beginning. Zhang Zhen is a good deputy, and there are a group of brothers who support him below, so Jiang Qinghan now mainly exists in the form of a soul.

To solve cases, you need perseverance and patience. Many cases have been investigated for decades, and the supervisors have changed one after another before the truth is revealed. It depends on the support of faith.

The Hanzhou Criminal Police Team with Jiang Qinghan and the Hanzhou Criminal Police Team without Jiang Qinghan are completely different mental outlooks. With Jiang Qinghan's strength, she had long had the opportunity to be promoted to the provincial department or hold a more relaxed position in the municipal bureau, but she still insisted on spared no effort in criminal investigation. One is that the criminal police team cannot live without her, and the other is that she cannot live without the criminal police team.

"It's getting late, why don't you go back first?" Jiang Qinghan whispered Su Tao.

Su Tao originally planned to have a good chat with Yan Wujin, but he didn't expect that the investigation of the case would take so long. Now that he left, he always felt that he would miss something and smiled and said, "I promised to pick up Yansha and Xiaowen in the evening. Why don't you accompany you until around nine o'clock? When the evening self-study is almost over, I will set off to pick them up."

Jiang Qinghan frowned and nodded, "That's OK!"

Zhang Zhen pushed the door open and said, "Boss, why don't you go to the cafeteria to have a meal first? The cafeteria is open for a short evening. If you miss this time, you will not be able to eat."

Jiang Qinghan and Su Tao smiled and said, "Let's go and have a meal together."

The canteen of Hanzhou Police Department is not very large, with only two windows open, and everyone treats you equally. You will not give you any preferential treatment just because you are the captain of the criminal police or the deputy director of the municipal bureau.

Jiang Qinghan, Zhang Zhen and Su Tao came to the cafeteria. It was not the time when the meal was just started. There were not many people sitting in the seat, but the window for the meal was crowded with people.

"You Hanzhou Police Station is too despised by others, right? The food is like pig food, and you cut corners. Each spoonful of wrists shakes three times. Do you look down on the people from our provincial department?" Standing at the front of the window was a tall and strong young man. He pointed to the canteen aunt inside the window and cursed.

The employees sitting in the dining room were whispering to each other. It was obvious that the canteen aunt had a long history of shaking hands when she was making meals, but in fact she was not deliberately targeting anyone or a group.

The canteen aunt was not an ordinary person, and said angrily: "If you think there are fewer dishes and poor dishes, don't eat in the canteen. I care what kind of provincial and department you belong to or from the country. There are only so many foods, everyone is the same!"

The tall and strong young man was so angry that he sneered: "If it weren't for your city's criminal police team's ability, would you think I would come to this broken place in Hanzhou? We are here to support your work, not to be so angry. The canteen is so bad, no wonder your Hanzhou criminal police team is called a foodie by the people!"
Chapter completed!