，

On the phone, Anna laughed dryly and said, "We took those two cigarette butts for testing, and they are indeed the same person." ”

"And after technical identification, the blood type is type B, and the epithelial cells in saliva contain two chromosomes, X and Y. ”

"Good. Hearing such a reply, Gu Chen was somewhat relieved.

At least the technical aspects have been solved by the Italian police.

So Gu Chen asked again: "Has the last person who contacted William been found?"

"This ...... It's a bit of a hassle. Anna also told the truth, looking exhausted.

"Gu Chen, we have been investigating today, and we can initially lock it down, there are four people who have come to William's house, and we are currently preparing to summon these people, so before the action, I took the time to call you, for fear that you would be in a hurry. ”

Anna's trust in Gu Chen was obviously quite relieved.

Explain the operation to Gu Chen, this is obviously beyond the content of the white paper in the cooperation between the Chinese and Italian police.

According to the white paper, in fact, the Italian police do not need to report at all.

But Anna also took into account that William's situation was the first to discover the situation by the Chinese police team where Gu Chen was.

If he doesn't talk to Gu Chen, he seems a little too mean.

Therefore, after weighing it, Anna still chose to inform Gu Chen.

"Thank you Anna. Gu Chen had already felt the pressure from Anna from Anna's words, so he smiled and said, "Then can you give me a rough idea, who are these people?"

"One is a plasterer. Anna said lightly: "William's house is a little damaged, so the plasterer who made an appointment last night came to repair it, and these nearby neighbors can testify, because the plasterer was introduced by the neighbors." ”

Anna was talking, Gu Chen was already making records, and asked, "What about the others?"

"The second is a beggar. Anna continued: "Last night, a beggar had been begging from house to house, and William had given some food out of the house, as the neighbors all knew about it. ”

"And the third one is William's...... William's lover, she also went to William's house last night, and we confirmed all of this on the phone. ”

As for the last one, he was a salesman who came to sell products, but William didn't buy it. ”

"This is the four most likely suspects that we have finally identified based on call records and visits from neighbors. ”

Anna had just finished speaking, and Gu Chen had already recorded all the clues on her side.

On the phone, there was a brief silence.

Anna was a little puzzled, and hurriedly asked Gu Chen, "Gu Chen, are you listening?"

"I'm here. Gu Chen said.

"If nothing else, we might have to investigate these people. Anna said weakly, trying to wait for Gu Chen's response.

After a short pause of two seconds, Gu Chen said, "Anna, you pay attention to this plasterer, this person is very suspicious. ”

"What? You mean the plasterer is the most likely?" Anna was stunned, and said with a smile: "Gu Chen, we haven't investigated these four people yet, why don't you only let us focus on the plasterer." ”

"Because he's a major suspect. Gu Chen also did not shy away from expressing his thoughts.

This made Anna on the other end of the phone stunned for a moment.

When Officer Wang heard the conversation between the two, he couldn't help but wonder: "Gu Chen, this Officer Anna obviously told you that there are four suspects, why are you only interested in plasterers? Do you suspect that Mr. William's death is related to him?"

"Yes. Gu Chen nodded to Officer Wang here, and continued to say into the phone: "Officer Anna, you just do what I say, and first go investigate the plasterer." ”

"Why?" Anna hesitated a little and instinctively rejected: "Gu Chen, you must know that the investigation takes time, but you have to give me a reason." ”

Although she knew that Gu Chen was quick to think, Anna sometimes really couldn't keep up with Gu Chen's rhythm.

From the career of the partner these days, it can be seen that the gap between the efficiency of handling cases between himself and the Chinese police is obvious.

Especially in terms of clue combination reasoning, the Chinese police can always give the most suitable option, which makes Anna a little embarrassed.

"Anna. Seeing that Anna was a little hesitant, Gu Chen habitually turned the pen with his right hand, circled the four suspects on the paper, and said, "You must know that these suspects have all been to William's house last night, and they are also the murderers who are most likely to kill William." ”

"So you have to combine the respective characteristics of these people in order to accurately investigate and give priority to filtering out the suspects with the lowest probability, so that your work efficiency will be greatly improved. ”

"I'll just say a few points, let me ask you, have I ever found a cigarette butt in the house?"

"Right...... Yes, you told me in person, one cigarette butt is indoors, and the other is at the doorstep. ”

"That's right. Gu Chen nodded very affirmatively and explained: "This person can enter the house, talk to William, and have a cigarette in his mouth, do you think it is possible for a beggar?"

Gu Chen's question made Anna sober up.

Anna hesitated for a moment, then said, "Yes, the beggar came to the door to beg for food, and he still had a cigarette in his mouth, and he still smoked two cigarettes, which is a bit unreasonable." ”

"If a beggar has money to buy cigarettes, then there is no need to beg, so the probability of a beggar who can enter the house should be very low. ”

"So the promoter can also be eliminated very quickly. Gu Chen took his mobile phone and walked back and forth in the room and said, "Have you found any brands of cigarettes?"

"Low-end cigarettes, as I said before at William's house, are the cheapest kind of cigarettes of a low-end brand in our Italy. Anna said.

"Yes. Gu Chen said with great certainty: "You mentioned it to me before, and later I also looked for relevant information according to the cigarette logo, and I found that this kind of cigarette can be called a national-level affordable cigarette." ”

"This kind of cigarette is especially popular with low-income people, so it shows that the perpetrator is probably not wealthy and does not care what others think of him. ”

If that's the case, you can exclude the salesman, because the salesperson cares most about what others think of them. ”

"No matter how poor you are, you can at least get decent cigarettes, even if they are not high-end cigarettes, they are not the cheapest low-grade cigarettes. ”

"Yes. Listening to Gu Chen's words, Anna on the other end of the phone was relieved: "Gu Chen, what you said is very reasonable, if I were a salesman, I would not be able to take out low-priced cigarettes in front of a rich man like William, especially smoking two cigarettes in a row, which is obviously inconsistent with the professional habit of sales." ”

"And the salesman cares most about face, just from the image aspect, it can be excluded. ”

"And your tests. Gu Chen followed Anna's remarks and said, "If I'm not mistaken, you just told me that epithelial cells were detected from cigarette butts, right?"

"Yes. Anna agreed: "The test report is now in my hand." ”

"Epithelial cells contain X and Y chromosomes, right?" Gu Chen asked confirmed.

Anna smiled: "yes, is there a problem?"

"Of course there is a problem, because at least it can be said that the perpetrator is a man, so William's lover can be ruled out. Gu Chen said.

"So?" Anna was shocked, and couldn't help but be stunned, and then said: "I wasn't very familiar with epithelial cells and chromosomes before, so there is still this kind of saying, it turns out that through chromosomes, you can distinguish between men and women." ”

"It's the basics, we learned biology in high school. Gu Chen also chuckled twice, and then said:

"Anna, you just have to remember that men and women have different sex chromosomes, the male is made up of xy, and the female is made up of xx. ”

"So if you go for a blood test, it's to check if you have a Y sex chromosome, and if you do, it's male. ”

"So that's the case?" Anna once again threw herself to the ground at Gu Chen's admiration, and the whole person couldn't help but admire: "Gu Chen, you really have you, you are simply amazing." ”

"If you make such a distinction, then this smoker must be a man, and William's lover can be excluded, you are simply a genius. ”

Anna admired Gu Chen's talent from the bottom of her heart.

In this way, Gu Chen can actually use the elimination method to help him find the one who is most likely to be the suspect.

Thinking about himself just now, he is also preparing to follow his colleagues to investigate these four suspects.

You know, the job of investigating a suspect is quite long and tedious.

Investigating four suspects at the same time is even more difficult, and sometimes more like looking for a needle in a haystack.

Not to mention the cost of time, the various resources consumed are also innumerable.

Thinking of this, Anna was also excited, and hurriedly asked Gu Chen: "Then according to what you say, the first three can be excluded, and only the plasterer is the most suitable?"

"That's right. Gu Chen also shared without hesitation: "Think about it, those two low-end cigarettes, aren't the cigarette butts very short?"

"Right...... Yes. ”

Gu Chen heard the movement of flipping through the paper on the other end of the phone, and it was obvious that Anna was also checking the information.

"The cigarette butt was short and soaked with saliva, indicating that the perpetrator habitually held the cigarette butt in his mouth. ”

"Most of us don't hold a cigarette holder in our mouths, unless the person has dirty hands or is too busy to spare his hands, then plasterers fit that very well. ”

"If you put it all together, the plasterer is the most suspicious of committing the crime, you can start with him. ”

"Haha, it can be so easy?" Anna was so happy that she didn't know how to praise Gu Chen.

Gu Chen's simple reasoning had already helped eliminate the three of them based on known clues.

In this way, the Italian police where Anna is located have the main object of investigation, and they can't help but feel happy.

"Thank you Gu Chen, if there is any progress in the case, I will keep you informed......"

Anna hung up with a thank-you.

On the other side, Officer Wang, who saw the whole process, was not surprised by Gu Chen's quick reasoning.

This kind of operation seems to have become commonplace for Officer Wang.

just kindly reminded: "Gu Chen, you help the Italian police without reservation, you don't necessarily appreciate it, you forgot about the Carmelo at noon? ”

"Senior Brother Wang. Gu Chen glanced back at him and said, "Maybe the Italian police can do a good job, I'm just speeding up their case-handling procedures." ”

"You have to know that if you investigate four suspects at the same time, the cost of police resources and time is completely immeasurable. ”

"Once the time is delayed for too long, it will hinder the progress of the case, and the fastest time and the most accurate way to help them find out the key to the problem is precisely to help ourselves. ”

"Because although William and we met in Pingshui, they can be regarded as friendships and simple acquaintances, and I also hope to find out who the murderer is as soon as possible. ”

In Gu Chen's work, there is no so-called intrigue and calculation.

Even if there are contradictions and rejections in the process of handling cases, you only need to solve key problems.

Sometimes nothing else is taken into account......

Officer Wang also knew Gu Chen's temper, so he didn't refute anymore, waved his hand and said, "Don't think about anything, wash and sleep." ”

......

......

Early the next morning.

As usual, Anna drove to pick up the Chinese police team to the police station.

On the way, Anna gave a brief introduction to the progress of the group's investigation.

Since last night, the Italian police have been in action, and the operation is still ongoing.

Came to the Los Angeles Police Department office.

When Mario saw that Gu Chen had just sat down, he personally handed a cup of hot milk to Gu Chen and said, "Officer Gu, this cup of milk is for you." ”

"Thank you, I've already drunk it at the hotel. Gu Chen kindly refused.

Mario was a little unhappy, and said directly: "This is different, this glass of milk is on behalf of all my colleagues in our office, and I specially thank you Gu Chen." ”

"Thank me?" Gu Chen was stunned and asked him curiously, "Officer Mario, what are you thanking me for no reason?"

"He would like to thank you for helping us find out the murderer who is most likely to strangle William. Anna put down her belongings, walked to Gu Chen's side and said, "Do you know Gu Chen? ”

"Just investigating the plasterer is enough of a headache for us, and as you might guess, we think the plasterer is very problematic. ”

"Did you find any latest results?" Gu Chen was curious, so he asked again.

Mario shrugged his shoulders and said with a smile: "It's too early to say, George is leading someone to search, as long as I can catch the plasterer, I guess the case will be solved quickly." ”

"I hope so. Gu Chen nodded slightly, looked at the steaming pure milk on the table, couldn't help but smile and hold it in his hand, and said, "Okay, I'll drink this milk." ”

Saying this, Gu Chen raised his right hand and drank all the milk in the cup.

"That's right. Mario was like a good buddy, his chubby right hand put on Gu Chen's shoulder, and said, "Gu Chen, you think he is an excellent policeman, we all think so." ”

"That's right. ”

"Yes. ”

"Gu Chen, well done. ”

......

Led by Officer Mario, many Italian police officers in the office issued friendly comments.

Objectively speaking, everyone's recognition of Gu Chen has been further enhanced.

Gu Chen smiled, stood up and saluted everyone: "Thank you for your recognition, we are friends, the police of the two countries help each other, that is how it should be." ”

"Gu Chen. Seeing Gu Chen's politeness, Fabio, who was sitting behind Gu Chen, teased: "You are such a smart person, did your parents cultivate your special interests and hobbies when you were a child?"

"I remember that your parents in your country, it seems that when they were very young, they liked to let you enroll in some interest classes and the like, I wonder if there is such a thing?"

"That's right, Gu Chen should have developed his intelligence when he was a child, right? Otherwise, why can your reaction and reasoning ability always be faster than us, in the previous cases, not only you, but also your entire Chinese police team's reaction speed is obviously higher than ours. ”

Anna has a lot of opinions about this.

After all, last time, Lu Weiwei even became a teacher and sorted out the case for the Italian police.

It is precisely because of that beginning that everyone no longer dares to underestimate the strength of the Chinese police team.

Gu Chen looked at everyone's curious eyes, and also said with self-mockery: "In our country, what parents like is called hobbies, and what parents don't like is called playthings." ”

"So what you call interest, in fact, the key depends on the parents, such as falling in love, the love that the parents agree to is called love, and if the parents do not agree, it is called foolishness. ”

"Poofha!" Listening to Gu Chen's humorous words, many Italian policemen in the office were amused.

This is the first time you have heard this statement......

"Haha, Gu Chen. Anna also calmed down, laughed dryly and said: "If that's the case, I think the last thing you should do as a parent is that you look down on your children, and you want your children to become dragons and phoenixes.

"This is also the most unsuccessful place. Gu Chen accepted Anna's comments and said, "So whenever our Chinese children develop some hobbies, they will say: Can this thing be eaten as a meal?"

"And when our Chinese children really take this thing as a hobby, they will say that they know how to eat it all day long. ”

"Haha......"

Hearing this, many Italian policemen were already laughing in each other's ears, as if these things that Gu Chen was ridiculing himself seemed very fresh and interesting to everyone.

"Doesn't that restrict your development?" an Italian policeman raised his hand and asked Gu Chen.

Gu Chen glanced back at him, smiled and said: "What you said is right, in fact, the times are different now, there is an ancient saying in our country, called: Three hundred and sixty lines, the line is the champion." ”

In fact, parents should not always limit their children's future eating problems to eating with iron rice bowls. ”

Pointing to himself, Gu Chen said again: "Like my parents, they belong to this kind of majority, their understanding of the iron rice bowl is to eat in one place for a lifetime. ”

"In my opinion, in fact, the real iron rice bowl is not to eat in one place for a lifetime, but to eat anywhere for a lifetime. ”

"Therefore, as a people's policeman, what I have to do is to constantly polish and improve my skills to help more people in need. “

"When you really do these things to serve the people well, your job bowl will not be lost, and then the iron rice bowl will become a golden rice bowl, and it will be much more fragrant when you eat it. ”

"Hahaha......"

There was another round of laughter in the office.

Everyone originally thought that Gu Chen was a serious person, but when this young man talked about reason, he was actually a powerful person.

For Gu Chen with this kind of character, he is actually quite popular among the Italian police.

Just as everyone was laughing and teasing, Mario suddenly looked at the latest picture from the computer, and couldn't help but smile and said, "Look, it's George who pulled up the image of the plasterer." ”

Following Officer Mario's gaze, Gu Chen also quickly turned his head to look.

But when he saw the avatar that suddenly flashed on the screen, Gu Chen's whole person was suddenly stunned, and he was stunned for an instant.

"How...... What's wrong Gu Chen?" Anna looked at him puzzled.

"How could it be him?" Gu Chen looked back at Anna and said, "You and I know this plasterer. ”

......

ps: The next chapter will be updated tomorrow morning, so let's see.