A word that wakes up the dreamer!

There are indeed similar situations in some revenge cases. The murderer was a participant in the original case. He killed these companions either to eliminate evidence or for so-called self-salvation.

What Kang Yanzhong did to Xu Qingqiu was indeed extremely secretive. No one in the entire police station except Li Dong knew about it. If Li Dong had not taken the initiative to confess, Xu Liang would not have known about it until now.

So how did the murderer know?

Never say that Xu Qingqiu has the habit of keeping a diary. No victim would record such a painful experience in writing.

"Do you suspect it's Li Dong?" Xu Liang asked Sun Yu.

Sun Yu shook his head, "Not sure, at least he is highly suspicious. After all, he was the only one of the four people who targeted Xu Qingqiu that night. He could make up a confession at will.

Even if he is not the murderer, it is possible that he told the murderer these things."

"Then I'm going to interrogate Li Dong now!" Xu Liang said excitedly.

"It's useless!" Sun Yu immediately stopped him, "Li Dong dared to surrender. He must have thought about various possible situations. What you asked was definitely a cliché he prepared. If he wanted to confess the murderer, he would have said it long ago.

Come out."

Sun Yu nuzzled at Ma Youran, "You and Meng Yuan go to interrogate Li Dong!"

There was a trace of doubt on Ma Youran's childish face, and she pointed at herself, "He won't tell the truth even if I go to him! It's okay if you ask me to help you determine which of his words are true and which are false, and

The more I confirm, the lower my accuracy is."

"I just need to confirm the authenticity of a sentence." Sun Yu tapped the confession on the table with his finger, "Kang Yanzhong took out 5,000 yuan from Xu Qingqiu's old clothes and helped me confirm the authenticity of this sentence.

"

Ma Youran did not refute Sun Yu's request, and then looked at Meng Yuan.

Meng Yuan shook his head repeatedly, "I won't go, I want to follow Brother Yu to investigate the case."

Ma Youran glared at Meng Yuan fiercely. She glanced at Song Wa again and raised her finger at him. Song Wa, an honest man, immediately followed her and the two walked out of the conference room.

"That sentence..." Xia Lan asked curiously, "Is it important?"

"It's not important for solving the case." Sun Yu said, looking at Xia Lan deeply, "but it is very important for Xu Qingqiu. I don't know how much the murderer knows about Xu Qingqiu's tragedy, but I want to let the world know

I know what happened to Xu Qingqiu."

"Tell me about Xu Qingqiu's social relationships?" Sun Yu obviously didn't want Xia Lan to ask too many questions. After all, it was all his guesses so far, and he didn't want to cause any trouble to Xia Lan's disciples.

The murderer is seeking revenge for Xu Qingqiu. It can be seen that the murderer is someone very close to Xu Qingqiu. It is inevitable to investigate her social relations.

Xia Lan obediently did not pursue the question and replied: "Xu Qingqiu has not had any contact with her relatives since her parents died. It is said that it was because no relatives borrowed money from her..."

Xia Lan also suspected Liu Feng's friends. After investigation, she found that Xu Qingqiu went bankrupt to pay off debts after Liu Feng's death. Liu Feng's friends and relatives avoided them, which was why Xu Qingqiu was so miserable.

In order to pay off debts and support his family, Xu Qingqiu worked as a nurse at a health center during the day and as a waiter in a restaurant at night.

Xia Lan also suspected that it was done by some people who admired Xu Qingqiu, but after investigation, she found out that Xu Qingqiu didn't talk to people very much during work. There were indeed people who admired her in the health center and restaurants, but she rejected them all.

The reason was that Xu Qingqiu had to take care of her daughter Liu Yuanyuan, and she did not want to find a stepfather for Liu Yuanyuan.

After experiencing the lessons of the previous death sculpture murder case, Xia Lan was particularly serious about investigating social relationships. She also investigated Xu Qingqiu's junior college.

Xu Qingqiu fell in love once when she was in junior college, but her boyfriend had been in Kyoto and had no idea about Xu Qingqiu's current situation.

Then Xia Lan checked Xu Qingqiu's high school. Xu Qingqiu went to high school in Yucai Middle School in Anhe County. It was naturally not comparable to No. 1 Middle School, but the admission rate was not low.

According to Xu Qingqiu's class teacher, because of his poor family background, Xu Qingqiu had a strong sense of inferiority during high school and was reticent to talk.

However, her class teacher sent a message saying that Xu Qingqiu had developed early at that time and was very beautiful. In private, everyone said that she was the school beauty.

It's a pity that Xia Lan asked many of Xu Qingqiu's old classmates, but no one knew whether Xu Qingqiu had been in love during high school.

After saying this, Xia Lan added half-jokingly, "As for junior high school, there is no need to check, right?"

Sun Yu nodded, looking at Xia Lan with eyes full of pity.

This information requires interviewing a large number of people, and the county public security bureau only has so many people. Considering that Xia Lan doesn't even have time to send messages to him these days, it shows how hard she works.

Regardless of the fact that there were two older men present, Sun Yu took Xia Lan's hand and guided her to sit next to him.

Sun Yu gently said to Xia Lan: "What you have to do now is to have a good rest. After I read all the case information, I will take you to catch the murderer."

Xia Lan nodded obediently, then folded her arms on the table and rested her head on it, admiring her man unscrupulously in an extremely comfortable posture.

"I can't stand it anymore." Xu Liang stood up and walked out the door, "Detective Sun, if you find out, let me know. I won't be a light bulb here anymore."

Just when Meng Yuan was thinking about whether he should also evade, Sun Yu said to him: "Compile the files of each deceased and give them to me. Let's see how this murderer killed!"

Although it sounded like hard work, when he thought that Sun Yu was going to reveal the murder methods that they had not yet figured out, he immediately picked up the information and started working.

After that, it was time to understand the details of all the cases. After more than ten hours of flying, several hours of high-speed rail, and then another car ride, there was no sign of fatigue on Sun Yu's face.

For him, this case was too interesting. The murderer left many puzzles. Some of them Sun Yu could figure out at a glance, but some of them he couldn't even figure out.

Such an opponent is comparable to Hu Xiao!

From the beginning to the end, Sun Yu never thought that Li Dong was the main culprit. At most, he could only provide the murderer with information about Xu Qingqiu.

The murderer should be a genius-level figure. He is cautious and meticulous in his work, much like a professional from a laboratory.

The series of accidental murders, coupled with the fact that the murderer could hit Kang Yanzhong with an ashtray accurately, at least proved that the murderer had excellent physics knowledge. Sun Yu's first impression was that he was the top academics from Anhe County No. 1 Middle School.

It's a pity that Xia Lan just said that Xu Qingqiu went to another middle school in high school, let alone junior college. It is absolutely impossible for those top students to go to junior college to accompany Xu Qingqiu for three years for the so-called love.

The first deceased was Liu Dezhu, and Sun Yu directly picked up the photos taken at the scene.
Chapter completed!