When Li Chengfeng returned to the police station, it was already nine o'clock in the evening, but the office of the major case squadron was full of people, and Li Chengfeng immediately asked everyone to go to the conference room for a meeting.

At the beginning, Li Chengfeng told everyone the results of today's discussion with Fang Xinling, and almost everyone was shocked by Li Chengfeng's words, among which Su Xiaonan was the most shocked, seeing that Li Chengfeng was speechless for a long time, You Jun immediately stood up and took the initiative to ask Ying to arrest Wei Yiche to the police station for interrogation, and was severely reprimanded by Li Chengfeng.

"Is it all calm now? Let's talk about the murder of Zhou Changhong today, I heard that you found a dagger with blood stains in the downstairs of Zhou Changhong's apartment. Li Chengfeng said.

Xie Bo stood up from his seat.

"Team Li, we did find a dagger with blood stains, and the blood stain test results have also come out, this dagger is indeed the weapon used by the murderer to kill Zhou Changhong."

"Is there anything special about this dagger?"

"There's an H engraved on it."

"Can you find out where this dagger came from?"

"Yes, but it will take time." Xie Bo pondered for a moment, then said firmly.

When Li Chengfeng and Xie Bo were talking, Li Chengfeng noticed the tear stains and red eyes in the corners of Su Xiaonan's eyes, so he looked at her: "Xiaonan, You Jun, I have a task to be assigned to the two of you to do, can you complete it?" ”

Su Xiaonan stood up suddenly, hurriedly wiped the tears from his eyes with his arm, and responded in a choked voice: "Team Li, I can finish it!" ”

You Jun then also stood up, but his eyes were always on Su Xiaonan: "I can too." ”

Li Chengfeng walked to Su Xiaonan and You Jun's side, patted them lightly on the shoulder, and said with a slight reproach: "I agreed so quickly before I even said what tasks I would arrange for you, how can you explain to me if I can't complete it?" Li Chengfeng didn't even pay attention, his voice at this time was a little softer than before.

Su Xiaonan suddenly broke down and cried, tears couldn't stop flowing down, You Jun hurriedly handed her a tissue, and the rest of the big case squadron looked at Su Xiaonan with complicated eyes.

"I'm sorry, Team Li, I'm sorry seniors-I know, I shouldn't cry at this time, it's embarrassing, but--I'm so sad, if it weren't for me-if it weren't for me, Zhou Changhong wouldn't have died, it's me-it's me who did wrong, it's me who was too naïve, you scold me-scold me." Su Xiaonan said with self-reproach while sobbing.

"Xiao Nan, look at me!" Li Chengfeng suddenly grabbed Su Xiaonan's shoulders and forced her to look into his eyes.

"I said, I don't blame you for this, the responsibility lies with me, as the captain of the big case squadron, it was my negligence that led to such a tragedy! But you have to understand that crying and scolding can't solve any problems, and I have also experienced a state like yours, so I know that turning grief and anger into strength, trying to catch the murderer, and avoiding more innocent people from implicating in death is the only thing we should do now! Do you understand? ”

"Xiaonan, Team Li is right, we have all had similar experiences to you, so we understand the uselessness of tears, it's not that we won't be sad, it's not that we won't be sad, but we want to hold this breath in our hearts and rush forward, just to give the victim's family and give us an explanation." Xie Bo replied.

Xie Bo and Li Chengfeng's words aroused the echo of the rest of the criminal police, Su Xiaonan also stopped crying in a sound of comfort and encouragement, looking at the rest of the people in the conference room, Su Xiaonan felt unprecedented warmth, and a force arose spontaneously from the bottom of her heart, she said gratefully: "Thank you seniors for your tolerance and teachings, I will definitely remember it." ”

"Can you listen to me now about any tasks for you and You Jun?" Li Chengfeng said.

"Uh-huh."

"From tomorrow onwards, you and You Jun will be responsible for monitoring Wei Yiche, and notify me as soon as we find anything wrong."

"Okay, we'll do it seriously." Su Xiaonan and You Jun responded at the same time.

"Team Li, the Wencheng Police Department's Big Case Squadron has already sent the results of the simulation test back to us." Yang Peiwu got up and said.

"Say."

"The test results show that on the day of the crime, the murderer should have sneaked into Zhou Changhong's apartment before moving out wearing white cotton gloves, brown pants, and a blue acrylic and cotton blended top, and based on the distance between the two white fibers and the distance between the window sill and the ground, it was calculated that the murderer's height should be about 1.8 meters, which is basically consistent with our previous speculation about the murderer."

"Okay, send someone down to investigate the people who went in and out of the Minglai community that day according to this characteristic." Li Chengfeng responded, then turned his head to look at Xie Bo, "Uncle Xie, there is something I need to ask you to investigate." ”

"Team Li, what do you say?"

"I suspect that there is probably a secret passage in the Wei family's villa to facilitate Wei Yiche's return trip, you can take a few people to conduct a key survey of the house."

"I see."

Li Chengfeng finally looked at the last two people in the conference room, Jiang Xin and Fan Yibin, who were the two policemen who Ning Ke had transferred from other departments in the police station to assist them in investigating the Wei family's mass murder case.

"How's Weidong's interpersonal relationship going?"

"Report to Team Li, in the past two days, we and the remaining more than 50 people have investigated the 3,526 customers and 1,215 partners that Wei Dong has seen since he took charge of Huaxia Technology, but because it involves a lot of trade secrets, our investigation has been deadlocked, and only more than 500 people have been screened out at present, but we really tried our best." Jiang Xin looked helpless, and he didn't dare to look at Li Chengfeng's eyes the whole time.

I thought that Li Chengfeng would severely reprimand them for their work progress, but he didn't.

"It's okay, I know how hard your investigation is, it's hard."

"Thank you Team Lee for your understanding."

"I asked you this time, I care about your investigation is secondary, and the most important thing is to provide you with two clues."

"Team Li, please speak." Jiang Xin's face was happy.

"You can include those who are addicted to cigarettes or have sons who have been bodyguards into the screening scope, and pay special attention to the bodyguards that Weidong has recently contacted during the investigation."

"Okay, Team Lee."

Just when Li Chengfeng was about to break the meeting, Su Xiaonan suddenly stood up.

"Team Li, I have something I need to tell you."

"What's the matter?"

"Just now I suddenly noticed one thing, compared with the Wei family's large-scale murder case, the murderer's murder weapon to kill the victim has changed, he gave up the use of a gun and chose a dagger, from the category of psychology, that is, the murderer's psychological state may have changed, but I can't see what the reason is for the time being." Su Xiaonan said solemnly.

"I see, I'll keep an eye on this later."

That night, the lights in the office were not turned off all night, and everyone in the big case squadron did not go back, and they were busy until the early morning of the next day.

Li Chengfeng slept on the table for a while, Xie Bo came to knock on the table, and he had to force himself to open his eyes and look at Xie Bo: "Uncle Xie, is there something wrong?" ”