That night, a sketch of Wu Chengan was distributed by the Public Security Bureau to all police stations, and then to all guesthouses, hotels, B&Bs and various residential properties in Yangbai County.

Sun Yu sat on the chair in the big office, his eyes fixed on the map of Yangbai County.

The places where the crime occurred are one in the south and one in the north. Yangbai County has changed a lot over the years, but Beiyang Park and Nanyang Park have only been renovated, and their locations have not changed.

Assuming that Wu Chengan has not been back to Yangbai County for ten years, many places here are unfamiliar to him.

The murderer, in addition to random killings, often chooses a psychologically safe area when committing crimes. He chose a park that has not changed much, which also confirms that he still subjectively believes that this is Yangbai County ten years ago.

"Focus on the old city." Sun Yu said and then his eyes stopped on the map of the old city.

The second deceased, Zhu Xingyue, and Wu Chengan lived in the same village. It can be seen that Wu Chengan should have other criteria besides the other person's occupation when killing people.

His goal was to kill the parents in the story, so these victims must have behaved similarly to his parents in front of Wu Chengan.

From this point of view, Wu Chengan must have been in contact with these victims.

Sun Yu added: "Get all the surveillance cameras in the hotel where the latest male deceased, Gao Wei, was located, and screen all the surveillance cameras in the hotel before his death. The search area focuses on the hotel as the center of the circle and radiates to the surrounding areas."

After discovering Galway's death, the police suspected a vendetta and copied all the surveillance videos in the hotel.

Yangbai County has a developed tourism industry and a large flow of people. The public security requirements for the catering and accommodation industry are naturally much stricter than other places. The hotel's monitoring can be traced back to one month before the incident.

So several people from the special case team gathered in front of the computer and checked the surveillance together.

However, after watching it for more than half an hour, everyone gradually looked away from the screen, rubbing their sore eyes when they left.

No one can withstand high-speed video playback for a long time, except Sun Yu.

"No wonder he can see ten lines at a glance. It turns out that the surveillance cameras are different from us." This is what Cao Qin said when she came to deliver coffee. This well-known female captain from Yangbai County was completely conquered by Sun Yu at this moment.

Another night passed, and when the morning sun illuminated the entire office again, the surveillance video finally finished playing.

Sun Yu sighed. He didn't find anyone suspected of being Wu Chengan from the surveillance. Although this didn't mean anything, Sun Yu always felt a little weird.

The deceased, Gao Wei, was the manager of this hotel. He is still single. According to the information, he loved his job very much. He was always the first to arrive at the hotel and the last to leave at 2 o'clock every day.

The social circle for such a person should be in a hotel, and the place where Wu Chengan can communicate with him should also be in a hotel.

"I can't do it anymore, let's get some sleep." After saying these words, Sun Yu stood up and walked to Cao Qin's office.

Sun Yu remembered clearly that there was a sofa in Cao Qin's office.

······

"Sun Yu?" Xia Lan's voice slowly reached Sun Yu's ears. Her voice was very soft, as if she was afraid of waking up Sun Yu, but she was still calling Sun Yu's name.

After calling several times in succession, and seeing that Sun Yu didn't respond, Xia Lan started to shake him gently again. She just wanted to wake Sun Yu up in the most gentle way.

Sun Yu's eyelids trembled for a moment, and then he slowly opened his eyes.

Xia Lan stopped what she was doing. If she didn't have to wake Sun Yu up, she really wanted him to sleep until he woke up naturally.

"Have you found the person?" Sun Yu asked after he regained consciousness.

"Found it." Xia Lan pointed to the door, "Finding it went smoothly."

Sun Yu sat up and looked at the time. It was now eight o'clock in the evening. He had slept for nearly 13 hours.

After lighting a cigarette, Sun Yu asked Xia Lan to talk about the arrest process of Wu Chengan.

At seven o'clock in the evening, a patrolling policeman saw a man suspected of being Wu Chengan on the street. After following him, he determined that the suspect had entered an old house. The policeman then contacted the Criminal Police Team.

When Xia Lan and Cao Qin went to the scene together, considering that Wu Chengan was most likely a human trafficker and had so many lives on his hands, they rushed into the house after formulating a detailed arrest plan.

But what everyone didn't expect was that Wu Chengan didn't resist at all. After being arrested, he kept asking what crime he had committed, as if he had been wronged.

"How can this go smoothly?" Sun Yu sneered, "This is just delivered to your door!"

Naturally, the police would not choose side roads when patrolling, which meant that Wu Chengan was discovered on the main road.

Since the police could recognize him at a glance, it can be seen that she was not even wearing a mask, which meant that he was not disguised at all.

As a serial murderer and human trafficker, how strong of a mental state must he have to dare to roam the streets?

From this point of view, Wu Chengan's behavior is too weird. In addition, he keeps asking himself what crime he has committed, which shows that he either really has not committed a crime, or he is confident and knows that the police cannot find any evidence to convict him.

Sun Yu and Xia Lan came to the observation room. Ma Youran and some people from the police team were sitting on chairs looking nervously at the interrogation room.

In the interrogation room, Cao Qin and Meng Yuan had just sat down, and the person sitting opposite them was Wu Chengan.

This is a man with slightly dark skin, who is as lean as Xiang Fei. He has heavy wrinkles on his forehead, and there should be a lot of wrinkles on his face when he smiles.

He has a short head, an oval oval face, windy ears, and a big nose. His appearance is almost exactly the same as the sketch given by Bai Mo. It is no wonder that the patrolling policemen can recognize him at a glance.

It seems that Bai Mo does have two brushes!

In the interrogation room, Cao Qin said in a deep voice: "Name."

Wu Chengan looked at Cao Qin blankly, his expression was extremely exaggerated, and he said in a sinister manner: "You arrest me without even knowing who I am?"

"I let you say it to give you an opportunity. It is also a citizen's duty to cooperate with the investigation." Cao Qin's attitude was not affected by Wu Chengan at all.

Wu Chengan rolled his eyes and then said: "Zhao Xiaolei."

Cao Qin smiled coldly, "Are you sure?"

Wu Chengan nodded repeatedly to express his confirmation. Cao Qin still had a sneer on her face and asked again: "Where is your identity/certificate number?"

"I don't remember." Wu Chengan put on a worried look, "Isn't it illegal?"

"Of course it's not illegal." E Caoqin, who has extensive interrogation experience, knew that Wu Chengan already thought he was in a dominant position at this time. She said, "It's normal not to know Zhao Xiaolei's number, because you are Wu Chengan!"

When he heard the three words Wu Chengan, a strange light flashed in Wu Chengan's eyes, and the colorful expressions on his face disappeared.
Chapter completed!