When the murderer killed for the first time in 88, he showed a very peculiar calmness, he killed someone, did not rush to escape or disguise the scene, but washed his hands with the basin of the deceased before leaving. He showed a sense of superiority over the deceased, and this superiority could not have come from these aspects of economic status, because the shoe prints he left at the scene were cloth shoe prints.

So, this sense of superiority comes from the moral level.

In China, any beautiful girl is infamous. Those old women who have nothing to do talk about people all day long, and what they say is nothing more than how those girls don't abide by women's morals. Talking on the street doesn't need to be edited or held legally responsible, and chasing after the wind is its source of news.

The murderer was a good man who thought he was very moral, and he killed the beautiful girls because they were guilty.

This is supported by evidence.

The first time he committed the crime, he was wearing cloth shoes, and after the police investigated the scene, they believed that he came from a relatively low level of society and was in a very poor economic situation. Then what happened was dramatic: the killer committed the crime a second time, leaving sneaker prints at the crime scene.

Of course, six years have passed since the murderer's second crime and the first case in '88, society is developing, and the country's overall economic strength is improving.

However, there is another very crucial detail: at the scene of the last case in 2002, the killer left not only footprints in leather shoes, but also cigarette butts of high-end cigarettes. This was the only time he left a cigarette butt at the scene, and in the previous case, the cigarette butt had never been found at the scene.

He told the police in this way: Lao Tzu can afford to wear leather shoes! Lao Tzu is a rich man!

It was wrong to think that he never disguised the scene, and he would also disguise the scene. It's just that his purpose in camouflaging the scene is completely different from that of ordinary criminals: ordinary criminals disguise the scene in order to interfere with the detection; And he disguised the scene in order to save face.

If you ask someone who knows a foreign language to translate the three words "save face", they will be very embarrassed. Because face is a unique cultural phenomenon in China, foreigners don't even understand what face is.

This man, he has a sense of moral superiority, and he cares a lot about what others think of him. So, he is a good person in life. The neighbors commented on him that he was a good old man who had hardly done any wrong. When it was found out that he did it, the neighbors would be shocked and say, "How could it be him?" ”

This is a case committed by an honest man.

He gives the impression of being cautious, somewhat introverted, and more timid.

On most of the corpses, he left an auspicious number of knife wounds, not by chance, but by numerical superstition.

It was only after the popularity of television in the 80s that digital superstitions were introduced from Hong Kong to the mainland. For example, "eight" is a homonym for "fat", which is the result of Hong Kong people not being able to speak Mandarin well.

What kind of person prefers to believe that numbers can bring them good luck? Is it a businessman, a farmer or a worker? Definitely a businessman.

But because the murderer's financial ability is average, it is likely that he is a small merchant and peddler.

He is not a native of Zitong City, maybe from the surrounding towns, maybe from further afield, but he can follow the victim without being detected, and he is very familiar with the local environment. Therefore, his profession must be able to travel from house to house without being suspected—he may be a businessman who sells goods along the streets, such as selling balloons, small toys, pastries, etc.

The case is clearer, and in fact for profiling, this step is almost done. But for solving the case, it is still far from enough to do this.

In the Green River serial case in the United States, the world's top profiler profiled the murderer. However, it took 20 years for the case to be solved. Even the Lin Jing Killer case, which is used as a teaching material, has accurately profiled that the murderer suffered from stuttering, but it will be a few months before the case is solved.

Ren Qiuling clearly knows that in order to solve the Zitong case, a breakthrough is needed.

The middle-aged woman who wrote the word "eight" on her door, will it be that breakthrough? She looked at the computer desktop, and the photo taken by the surveillance was placed near the keyboard.

However, the computer desk was empty and the photo was missing.

It seems that Section Chief Xiao of the Copper Special Affairs Department not only looked through Ren Qiuling's personal belongings, but also took some things away.

Ren Qiuling didn't give up, and looked around again, and then found that the photo was lying quietly on the ground in front of the computer desk, and the middle-aged woman's face still had clear footprints of men's leather shoes.

Section Chief Xiao didn't follow up on the case, and he didn't know where the case had been investigated, so he didn't know what the connection between this photo and the case was, and he just thought it was irrelevant.

Ren Qiuling picked up the photo and carefully blew the ash on it. She didn't know where the breakthrough was, maybe this middle-aged woman was the breakthrough in the whole case.

"You're wasting your time!" Old Wei yelled at Ren Qiuling, "These conclusions are almost the same as the conclusions that Lan Jin came to back then!" ”

The wind swept the pebbles and "crackled" on the car, and the whole car made a sound.

Ren Qiuling stared at the windshield nervously, hoping that it could actually block the wind. But she really felt as if the glass was going to shatter at any moment.

Seeing Ren Qiuling's nervous appearance, Old Wei Tou laughed: "Haha! You southerners will never understand the wind in the northwest, and even a child can blow you away on such a day! ”

"That is!" Ren Qiuling also roared loudly, "All cases happen on a windy day, otherwise as long as the woman screams for help, the murderer will be caught?" ”

Old Wei shouted: "Yes, yes! You can see that the windows on the side of the road are separated by a layer of iron yarn, which is used to prevent small stones from breaking the glass. ”

"On a windy day, why didn't those women close the door?" Ren Qiuling asked again.

Old Wei Tou roared: "The door is leeward!" I noticed this problem when I built the house, otherwise the wind would not be comfortable in the house! ”

Ren Qiuling held the photo of the insider in her hand, and when Lao Wei saw this photo, he said, "I'll take you to see her." ”

"This woman's name is Dong Fengxian, and her name does not appear in all the files. However, she may be the only woman who has seen the killer of the Copper serial case and is still alive. These circumstances were known only to the police who handled the case back then. Old Wei Tou explained.

"Why didn't such an important situation be included in the file?" Ren Qiuling asked with the majesty of the inspector at that time.

Old Wei Tou laughed at her instead: "You, too young and ignorant!" In all official police documents, if there is a 'maybe', 'maybe', 'probably', then the person who wrote this document should wait to write it for inspection! This Dong Fengxian does not cooperate with our investigation, we can't be sure of the truth of her story, and of course we can't write her into the file. ”

The roof of the car drove in the wind and drove to the entrance of a shopping mall. Ren Qiuling is still strange, with such a strong wind, how can the mall open for business? Unexpectedly, a transparent plastic curtain was hung in front of the mall, which was the kind one by one, and it was still open for business.

Sure enough, Lao Wei Tou said it well, when the copper people design the house, the first thing they consider is how to prevent the wind, and the door will not be opened in the direction of the wind.

Ren Qiuling was just about to open the car door and get out of the car, when she suddenly lifted the door curtain from a woman in red clothes in the mall, got into the wind all of a sudden, and ran away with big strides.

"Dong Fengxian!" Old Wei Tou rolled down the window and yelled: "We are just investigating the case, not eating people!" Don't run, danger! ”

The red garment ran faster in the wind.

Closing the car window, Lao Wei spit out the sand in his mouth, "Bah, bah! With such a strong wind, don't get an accident, we have to catch up! "Reversing while talking.

The old Xu Tou in the back seat said loudly: "Why don't you say that this company is a cow?" is also a criminal investigator, and I haven't saved a car in my life. ”

Old Wei Tou laughed, "That is, back then, you didn't have as much money in your district as we did, and you couldn't beat our company in exams, and you couldn't beat our company in a fight." It's been a lifetime, and it's still not as good as our company. ”

Lao Xu Tou laughed at himself and said: "I believe that the exam is not as good as your company, all of you junior high school teachers can graduate from Tsinghua University, and nothing can compare." When it comes to fighting, I don't think you can beat us. ”

Old Wei Tou laughed "ha": "You talk about the entire city, three-quarters of it is a company, how many young people can there be in your district?" How can you beat our company? ”

Lao Xu thought that it was really this reason, sighed, and said lukewarmly: "Yes, your company is so good, so lame, why is it that the company is gone?" ”

Lao Wei stepped on the accelerator with a black face, and the car jumped into the wind.

The atmosphere inside the car was very dreary.

Ren Qiuling suddenly shouted: "I understand! The murderer came to the door with a knife himself! ”

Old Wei Tou observed the road conditions and asked, "What do you say?" ”

Ren Qiuling said: "What you said just now reminded me that the copper back then was actually quite messy, and fights and brawls were a common occurrence; The murderer's physical strength is relatively weak, and it is quite troublesome to kill a woman with a knife; He had to walk the streets to do business; None of the murder scenes have any indication of the loss of knives. Therefore, he carried a knife on his body, mainly to protect himself. ”

Old Wei was angry and shouted: "Are you confused when you solve the case?" Does this still need to be reasoned? The police had long deduced from the wounds of the deceased that the murderer had brought a knife himself and had committed nine crimes, using three knives, two of which were single-edged and one double-edged. These knives do not have long blades and should be easy to carry, presumably daggers or the like. There has been a conclusion a long time ago, and you still reason, reasoning, how troublesome? Why not learn from Newton and stand on the shoulders of giants to solve crimes? ”

Ren Qiuling was angry in her heart, and she couldn't be angry with her seniors, so she could only complain in a low voice: "Where did Newton solve the case?" ”

The wind swept the wind and sand, the sky and the earth were yellow, and the car seemed to drive into a chaotic world. The scenery is blurred all around, except for a bright white highway that stretches infinitely.

There was silence in the car—it was a strange feeling, it was clear that the wind was raging, but I couldn't hear anything, it was like my ears were suddenly deaf.

Suddenly, a brick was smashed into the windshield of the car with a "bang" by the wind, the windshield was of good quality, the brick was embedded in it, and the spider web-shaped pattern was broken with the brick as the center, but the glass still stuck to the post to help everyone block the wind.

Lao Wei slammed the brakes, "Something's coming!" ”

Don't look at Lao Xu Tou and Lao Wei Tou often bickering, they cooperate well at critical times. "I got out of the car to see what was going on. Such a heavy red brick does not look like the wind blows. ”

Old Wei blinked, "Pay attention to safety, do criminal investigation for a lifetime, it is inevitable that there will be a few fatal enemies." ”

Lao Xu took out the gun, opened the gun safe, and said, "I know!" ”