Qin Yi didn't want others to hear about this topic, so he stepped back and came to the last row of the ring stands, only to turn his head and find that Li Sisi had also followed, and he immediately frowned. Li Sisi said angrily: "What are you doing? Can she listen to me, can't I? What do you say I am inferior to her?!"

"Good, good. Qin Yi frowned as he spoke, "These things are much more terrifying than you think, I don't want you to come into contact with these things, it will affect your mental development, understand?"

"Then you can skip those horrible places. Tang Xueying hugged her arms and said.

Qin Yi sighed and replied, "Look, what's the biggest difference between a serial killer and an ordinary killer?"

"Will they keep killing people?" Tang Xueying asked curiously, Qin Yi pointed at Tang Xueying and said, "It's a bit close, but it's not accurate." Ordinary killers kill people with obvious targets, and their targets must have some kind of connection with him, people he knows, maybe they offend him, maybe they make him jealous, but serial killers are different, their targets are mostly strangers. ”

Saying that, Qin Yi shrugged his shoulders: "Many victims may think, why me? I obviously didn't do anything, I don't even know him, I do good deeds every day, why would I choose me? And unfortunately, serial killers are like this, they may have some common ground in choosing targets, but there is no way to predict who his next target may be." ”

"But the Scarlet Killer has committed so many cases in the past ten years?" Tang Xueying frowned and asked, Qin Yi glanced at her, and said with a little dissatisfaction, "It seems that you have really done a lot of investigation, huh?"

After speaking, Qin Yi patiently explained: "Serial killers are usually very smart, they have a certain amount of self-control, have a normal life, and even some people will learn the investigation skills of the police and be familiar with the police handling process, plus they choose strangers to start, and many people are traveling between many places in the United States, which leads to the expansion of the scope of the crime, which makes it difficult to arrest the serial killer." ”

As he spoke, Qin Yi raised his index finger: "Just imagine, there is a murderer who killed more than 20 people, but from the clues at the scene, you don't know what the other party looks like, what characteristics he has, why did he kill this person, and he doesn't even know if the other party is a man or a woman, where do you start investigating?"

"Then teacher, how did you solve the case?" Li Sisi immediately asked.

"At this time, it depends on the psychological profile, and the US authorities also have relevant departments engaged in this work, and I am basically acting as their adviser. Qin Yi explained, "Based on the murderer's modus operandi, target selection, and traces of the scene, the murderer's motive and personality, and even physical characteristics such as height and skin color can also be determined." ”

"So, that's how you caught him?" Tang Xueying looked incredulous, "I looked at the crime scene and made a psychological profile, and then the police followed your profile to find the murderer?"

"It's a little more complicated. Qin Yi frowned and said, "Actually, that psychological profile is nothing, and the FBI's criminal behavior research department has also made a basically similar psychological profile, and I just added a little detail." Again, the point was that I guessed his motives, and thus deduced how he chose his target, stopping him when he acted again. ”

"I read what I said on the Internet, it looks like he chose ......" Tang Xueying wanted to ask, but Qin Yi interrupted her.

"Alright, my detective squad leader, this matter is almost here, the details are too scary for you. Now that you know what you want to know, let's cheer them on for Hualong and them, right?" Qin Yi replied with a smile.

Tang Xueying was obviously a little dissatisfied, but she didn't say anything and returned to her seat.

For Qin Yi, the sports meeting itself is still relatively boring, he is actually not interested in the competition, and he doesn't care about the awards, not to mention that the people in their class are either sports students or more powerful than sports students, and there is no problem at all through the current qualifiers, so he observed the state of the people in the class from the stands.

Liu Huaxing looks a little more cheerful, although he is still immersed in painting, but he also talks and laughs with the people around him, he is actually more popular among girls, but not so open among boys.

Regarding this, Qin Yi plans to adjust it by changing positions next time.

Soon, at noon, Qin Yi instructed the students in the class not to run around, not to talk to strangers casually, and the meeting time in the afternoon, and then came to the restaurant with Anina.

"I thought you would reject me for the rest of your life. Annina teased with her chin on her back.

"Actually, if you don't always want to pull me into the police station, you'd be a good blind date. Qin Yi replied with a smile, and then looked around, "However, this place seems to be a bit expensive, can you afford it?"

"It's okay, it's also an inspector anyway, and it's okay to let people give a discount. Anina waved her hand and smiled disapprerovingly, then pulled Qin Yi to sit down, "Okay, let's talk about some topics that should be talked about between couples, right?"

"For example?" Qin Yi nodded, and Anina immediately said, "There has been a case in Nanhua City recently......

"So couples usually talk about these topics?" Qin Yi couldn't help but laugh.

"Hey, isn't it just a matter of talking about the work of both sides? Annina pretended to smile shyly, "Anyway, I recently received a case, this case is like this, there is a family ......"

As a result, throughout the lunch, they were talking about this case, and Qin Yi was not very satisfied with this result, after all, talking about some details of the murder during the meal did not help to increase appetite, and Anina seemed to realize it.

"I'm sorry...... "Am I the worst blind date you've ever had?"

"Honestly? No. Qin Yi raised his eyebrows and smiled, "When I came back the year before last, once my parents introduced me to a girl, she was pregnant, do you know......?

As he was talking, Qin Yi's phone suddenly rang, he looked down and answered the phone: "Hey?"

"Teacher, come on, they're going to fight with someone!" Jin Jing's voice came from the other end of the phone, looking very panicked, Qin Yi frowned and asked, "Classmate Jin Jing, calm down first, who is going to fight with whom?"

"The boys in our class, and ...... It seems to be a student of this university. Jin Jing's voice trembled.

"Where are you? I'll go right over. Qin Yi asked, looking down at the time.

"In, at the door of the Starry Sky Internet Cafe, I don't know which direction, I followed the boys in my class. Jin Jing stumbled and said, Qin Yi nodded and said, "I know, you stand far away and don't be affected, I'll go over immediately." ”