Daqing's question is also what others want to ask.

Zhou Quan nodded and continued: "This is going to continue what I said before, the first case, from the point of view of the modus operandi and the fact that there was no trace left at the scene, shows that the perpetrator is calm, calm, thoughtful, and proficient in medical skills, has practiced martial arts, people who meet this characteristic should have experienced a lot of big scenes, and are used to seeing life and death, and can ignore everything related to death." And according to the old Chinese medicine doctors I visited in Kyoto, it takes a long time to learn and practice Chinese medicine and martial arts, and it is too young to be successful, so I said that adults are between the ages of 35 and 45. It is not a woman, because a woman generally resents the person who has hurt her, and it is difficult to have this kind of emotion for people who are not related to her. Men are different, and it is important that men will make them very prone to this emotion when they see something similar to themselves. ”

"But it's a woman on the video!" Daqing asked again.

"You can disguise, there is a precedent for this, it's not strange."

"How do you know if the age of adulthood is between thirty-five and forty-five?" Qin Fei suddenly asked.

Zhou Quan took a sip of milk tea, "I said this before, the reason why it is set in this range is because the murderer was calm and calm when he committed the crime, well-planned, proficient in martial arts, proficient in acupuncture, etc., all of them behaved like people around fifty years old, but in terms of individual mobility, it seemed that they were only thirty or forty years old, so I went back to Kyoto to check some information, and asked my mentor, and he also felt that there was the greatest possibility in the adult age range, so I set the age span in this range, but I did not rule out other possibilities." ”

"Then how can you be sure that the next one is not the adult's case?" Shen Bing raised his hand and asked.

"Because there were two victims at the scene of the first case, one died and the other was insane, so if the perpetrator was a person or a young man, it would be impossible to restrain two people at the same time if he didn't know martial arts or acupuncture, so I said it was an adult. I also said that his purpose may be to do anti-fear training for the minor next to him, so it is not difficult to understand the later case, the scene of the crime is only the deceased, whether it is the image analysis shown in the video or the last person the deceased came into contact with before his death, it can be determined that the woman or man is not very old, so it is said that it was done by a minor who grew up, which is also the biggest difference between the later case and the first case. And from the second case after the first case, the third case to the fifth case, it is very likely that they were adults who first controlled the victim, and then the minors did it, and we can see the difference between the wounds when we look at the photos at that time, which I only recently discovered. Zhou Quan put a few more photos.

"It seems that the wounds are the same, but the subtle differences can be seen, the first case, the knife is clean and neat, without dragging mud and water, and this one, this one, and this one," Zhou Quan pointed to the photo and said, "The strength of the knife is obviously insufficient, the edge is not neat and straight, but there is a little arc, which shows that the strength is not strong enough and the hand is not stable enough, and it also shows that the perpetrator was very scared at that time, this is really difficult to find if you don't look carefully, and it is very easy to be ignored." ”

Everyone nodded, and Zhou Quan continued: "Let's look at the time span again, the span of each case is getting longer and longer, the longest is nearly two years, until the last three cases, which are different from before, and the interval between each case is irregular, that is to say, the mentality of the perpetrator has changed." ”

"Change of mindset?" Qin Fei frowned and asked.

"Yes, we also call it crime escalation! As I said before, judging from the last three cases, the anti-fear training should have been completed, and the minor is no longer afraid of some things he has experienced, but he has slowly transformed the things he once feared into hatred, which is in line with what I said before, it is some kind of execution or punishment, because these three cases have one thing in common, that is, they have all been exposed, so much information on the Internet, only young people will have the habit of surfing the Internet, and it is easy to find a suitable target from it. So the next few cases must have been committed by young people, but there is one thing that I am curious about? ”

After Zhou Quan said a sentence but I was very strange, he frowned and stared at the whiteboard for a few crimes, thinking for a while, and said a bit like talking to himself: "I'm very strange, why did he suddenly stop committing crimes?" It's been more than half a year since the last case, and it's like, it's like...... It's as if we were investigating this case and suddenly we were interrupted by the leopard's thing, then he must have been interrupted by something he couldn't resist, what could it be? ”

Everyone was contemplating and thinking, and Daping said, "Could it be a sudden discovery of conscience?" ”

Shen Bing said: "Could there be an accident, a car accident or something?" ”

Lu Ming said: "Could it be that someone you like suddenly got married and stopped?" ”

Zhou Quan shook his head, Qin Fei suddenly remembered Zhou Yilai, his grandfather was in a very bad mood when he just died, so he guessed: "The age of the adult you analyzed, could it be that the adult you said passed away?" ”

Zhou Quan's eyes lit up and snapped his fingers, "It should be this!" Only this explanation is reasonable and reasonable. ”

Everyone breathed a sigh of relief at the same time, but at the same time felt a trace of powerlessness, after such analysis, there are thousands of people who meet such conditions, where to find them!

Zhou Quan continued: "Male, between 20 and 25 years old, from this city, thin, introverted and gentle, he experienced domestic violence when he was a child, he has an unrestricted job that can spend his time at will, is conducive to stalking the victim, has practiced martial arts, is proficient in medical skills, and has lost his elders in the last six months, there should not be many people who meet these conditions." ”

Everyone's eyes lit up, Qin Fei didn't know why, he just felt that Zhou Quan was talking about Zhou Yi, frowned and thought for a while and said: "Forget about other conditions, it's not special, but you said that you are proficient in both medical skills and martial arts, there are not many such people, what kind of profession will it be?" ”

Zhou Quan thought for a while, "I don't know much about the current profession in China, but according to what I learned before, it may be a doctor who has studied martial arts, or it may be a martial arts athlete coach who has studied medicine." ”

"It's easy to do it if you have a scope!" Everyone's eyes lit up when they heard this, and they began to talk.

"It could also be a retired special soldier." Qin Fei said, because he came out of there, and he also knows better, the people there are all special talents, and there are not a few people who know martial arts and know medical skills, but those who are proficient in acupuncture and moxibustion are ......

"It's possible, but it's impossible for the young one, and the adult may be, it's too hard to say that, I'll divide them, adults we call them number one, and minors number two. No. 1 may be a veteran who is proficient in medical skills, especially acupuncture, and No. 2 may have been taught by No. 1. ”

Everyone was lost in thought again, racking their brains to think of possible careers.

Qin Fei too, his thoughts drifted far away, from the black shadow that Shi Jinnan told him to the black shadow he saw with his own eyes, but these two black shadows will not be the same, one is the perpetrator of the murder, and the other is the mysterious person who secretly helps him solve the case.

Is there really a world master in China now? Or is he really a frog at the bottom of the well, and his knowledge is too shallow?

If this case can't be solved in the end, and the murderer can't be caught, will these cases become strange cases for the ages, and no one can solve them?

But Qin Fei still firmly believes in that sentence, the French Open is restored and not leaked!

"Alas! Listen to your analysis is reasonable, but how can you find this person! Da Ping sighed.

"yes, what's the use of knowing if it's one person or two, if it's a man or a woman? There are so many people outside, how can you find them? We can't just say that we are a murderer! Evidence is still required. Lu Ming also sighed.

Zhou Quan's eyes glanced at Qin Fei, who was silent in thought, "Then I'll make an analogy!" Zhou Quan closed the information above, paced back and forth, and said slowly: "Take the two cases now, I said, this person, male, between twenty and twenty-five years old, from this city, thin, introverted and gentle, has an unrestricted job that can be used at will, is conducive to tracking the victim, has practiced martial arts, is proficient in medical skills, and has lost his elders in the past six months. ”

Qin Fei glanced at Zhou Quan and didn't speak, Zhou Quan continued: "The gender matches, the age matches, the personality matches, I feel frightened when I see the bloody photos, it is very likely that there is a shadow of childhood, yes!" He pointed to the photo on the whiteboard and said, "He has a bubble tea shop, two employees, a freelance photographer, and is in line with the job of having unlimited time at will, and in the near future, his grandfather has passed away!" These are all in line with the characteristics of our murderers, the only thing that needs to be verified is that he knows martial arts and is proficient in acupuncture, if he deliberately conceals them, we don't know! And his grandfather, let's assume, if his grandfather knows martial arts and is proficient in medicine and acupuncture, then there is no doubt that they are the people we are looking for! ”

Everyone looked at Zhou Quan dumbfounded, and now that they listened to Zhou Quan's analysis, they all felt that he was talking about Zhou Yi, who was so soft and glutinous, was the perverted serial killer hidden by their side!

"His grandfather was eighty-six last year, and he was eighty-seven years old this year, if he should have been seventy-four years old thirteen years ago, regardless of the age you analyzed, even within the range you said, can a person in his seventies have such good skills?" Qin Fei said lightly.

"I know that I've always struggled with the age of No. 1 before, so this is not restricted, maybe it's younger." Zhou Quan said.

Everyone looked at Qin Fei and Zhou Quan, and they all knew that Qin Fei was unhappy, but no one said anything, just now Zhou Quan also said that it was just a comparison, but the low pressure on Qin Fei's body made everyone close their mouths tightly.

There was no movement in the room for a while.

Zhou Quan felt a little embarrassed, but he felt weird in his heart, why did all Zhou Yi's appearances be the same as what he analyzed? In addition to kung fu and acupuncture.

"That, Zhou Quan is just an example to make a comparison, I didn't say that Zhou Yi is ......" Lu Ming tried to break the silence, but Qin Fei glanced at him and quickly closed his mouth again.

Qin Fei stood up, "Don't get entangled, take a break, this serial case can't be solved in a while!" ”

"Well, yes, just now the second team said that there was something looking for me, I'll go over and take a look." Wu Qiang stood up, awkwardly tidied up his neat clothes and went out.

"Ah, yes, I'm not done yet!" Da Ping turned her head back to her desk.