After Xu Yao came out of the temporary morgue, he immediately called Liu Xiaobo and asked him to bring two police officers to search Du Xueming's room.

If Du Xueming was really the murderer behind Chen Xinjiao, the intelligence and anti-detection ability shown by the murderer in these five cases were amazing.

Xu Yao had tried to find any clues from Du Xueming many times, but all in vain. When

Xu Yao arrived at Du Xueming's room, Liu Xiaobo was already waiting at the door with the police.

The bedroom was set up in European style, with a kitchen, a living room, and a balcony with a view of the sea.

The room was luxurious and comfortable, impeccable, with shiny inlaid wood floors and a clean white carpet on the floor.

A huge solid wood closet was installed against the left wall of the bedroom. Liu Xiaobo pushed open the sliding door, and it was filled with clothes. The clothes were arranged neatly and in an orderly manner.

There were at least 20 sets of branded men's jackets in the closet, including leather jackets, suits, and tweed coats, with suits being the most common.

Xu Yao glanced at them one by one. The suits came in black, smoky gray, linen, and khaki. They were all luxury goods handmade in Italy.

Suddenly, a suit caught Xu Yao's attention. He quickly reached out and took the suit off, then picked up the two sleeves and compared them.

"Liu Xiaobo, come here, take a look at the left sleeve."

Liu Xiaobo quickly walked over and looked carefully. There were two buttons on the right sleeve of the suit, but only one button was left on the left sleeve.

Suddenly, an idea came to him, "Captain Xu, why do these buttons look so familiar, and there is one button missing on the left."

Xu Yao also picked up the sleeve attentively and examined it carefully, and took out his mobile phone to search for a photo to compare carefully.

"Xu Yao said: "Do you know why it looks familiar? The button missing on the sleeve is exactly the same as the button in Chen Xinjiao's hand."

Liu Xiaobo showed surprise on his face. This was finally a very important clue.

Xu Yao took off his clothes and asked Liu Xiaobo to bring a plastic bag. After throwing it in, he said: "Continue searching the room, don't miss any corner." There

was a small study next to the bedroom. Xu Yao walked up and quickly scanned the books. They were basically medical monographs, and some were economic books.

Xu Yao flipped through them carefully, and then he began to look at the information on the books. There were also several handwritten notes. Xu Yao picked them up and flipped through them. They turned out to be Du Xueming's medical diary.

After flipping through them casually, he found that Du Xueming's life was extremely monotonous and boring. He was either sitting in the hospital to see patients and perform surgery, or going home.

Xu Yao could infer from the layout of the entire study and the contents of these books that Du Xueming usually leads a regular and healthy life.

He doesn't look like a perverted killer with a calm mind. Xu Yao was actually quite confused.

Could it be that this is just an appearance presented by Du Xueming?

After a while, Liu Xiaobo's hurried footsteps were heard again, and at the same time, his excited voice was heard, "Captain Xu, we found something, we found something."

Liu Xiaobo rushed into the study with a small plastic bag in his hand, "We just found this in the secret compartment under the bed in the bedroom."

Xu Yao quickly took it and looked at it, his eyes widened. This kind of chemical rarely appears in front of ordinary people, but it does often appear around the police.

The plastic bag contained cyanide, a chemical poison.

Chen Xinli was poisoned to death by this poison, and now this drug was found in the bedroom of Chen Xinli and her husband.

The result is extremely ironic.

Liu Xiaobo also recognized this chemical agent and said excitedly:

"Captain Xu, now the truth is out. This time Du Xueming can no longer make excuses, and now the evidence is conclusive. Chen Xinli must have been killed by her husband Du Xuemin.

It seems that our previous speculation was correct. Du Xueming was the mastermind who had been conspiring with Chen Xinhua.

This Du Xueming is really vicious. After using Chen Xinhua, he directly killed her."

This was originally an exciting news, but Xu Yao frowned. These two clues did play an extremely important role in determining Du Xueming's guilt.

But Xu Yao couldn't understand why he could easily find such important evidence this time when he couldn't find any clues from Du Xueming.

If the button in Chen Xinjiao's hand was pulled off the sleeve of Du Xueming who killed her, and Du Xueming didn't notice it at the time, this would make sense.

But this chemical hydrogen is prohibited from circulation. Since he wanted to use it to poison his wife, he actually had many opportunities.

The two of them slept together every night, so he had too much time to kill his wife without anyone noticing.

Why did Du Xuemin make such a fuss to perform this death show in front of so many people?

The only thing Xu Yao could think of was to provoke and despise the incompetence of their police.

Now only Du Xueming can speak up about the reason.

Xu Yao immediately turned back and told Liu Xiaobo to continue searching the scene, and he rushed to the M City Criminal Police Squad.

If Du Xuemin is really the behind-the-scenes accomplice in these five assault cases, his anti-detection ability will give the police a headache.

However, Xu Yao is also a tough guy, and he decided to have a good meeting with this hypocrite in the guise of a doctor.