This is also what Chen Yan is most confused about. Chen Ziqiang was suspected of being killed after he disappeared. This was a judgment made by Chen Yan and others.

So Chen Yan immediately arranged for Li Yun and others to search all the hidden corners within the surveillance blind spot.

All bathroom sewer drains and even septic tanks were randomly checked, but no suspicious information was found.

Chen Yan even personally checked every classroom and bathroom partition in the laboratory building and found nothing.

There are no traces of treatment on the walls of the bathroom, and the partitions have not been wiped. This statement is doubtful and I guarantee that it is absolutely correct.

However, Zhou Haitao now said that he killed Chen Ziqiang in the outermost partition of the women's bathroom on the first floor of the laboratory building.

He beat people to death with a hammer. How is this possible?

If a person dies due to blunt force hammer blow, there will definitely be a lot of blood spatter.

Such spattering blood traces, even if they are carefully cleaned and wiped, may leave clues to be discovered. So how did Zhou Haitao do it?

Not only are there no traces left, there are even no traces of treatment on the walls and partitions!

"Zhou Haitao, I hope you will tell me honestly. I personally checked the bathroom partition you mentioned. There is absolutely no blood left. You said you killed Chen Ziqiang with a hammer, so why is there no blood?"

"This is very simple. I have thought of it a long time ago, so when I cheated Chen Ziqiang out, I covered the bathroom partition with three layers of plastic paper. I even used plastic cloth to cover the partition, just to avoid blood stains.

Go out and let you find out."

"And I also wore a plastic disposable coat and gloves that day, so there would be no blood stains."

Cover with plastic sheeting…

Chen Yan was a little surprised. He didn't expect this detail.

Zhou Haitao's method is indeed very effective. The entire partition is covered with plastic sheeting, and all blood stains are naturally blocked and will not spray to the front or partition.

At that time, as long as all the plastic sheets are put away, nothing will be left in the bathroom except some bloody smell.

In a toilet with windows always open for ventilation, the smell will dissipate quickly.

However, besides these, there is another problem.

"What about the blood? Where is the blood left after Chen Ziqiang was killed?"

"After I killed him, I cut his aorta and put the blood in a small bucket."

Small bucket?

Chen Yan suddenly remembered the surveillance footage from the chef's class laboratory on the third floor. On the day of the incident, Zhou Haitao took leave, and when he returned to the laboratory, he picked up a small bucket and used the contents to make blood tofu.

"So, the material you use to make blood tofu...is Chen Ziqiang's blood?"

Zhou Haitao nodded: "Blood is difficult to process. I was afraid that I would leave traces and be discovered by you, so I took it to the kitchen on the third floor and made it into blood tofu. You would not be able to find it."

"How did you dispose of Chen Ziqiang's body?"

"It was broken down directly. I broke it down after killing him that morning. Well, then in the afternoon I took another crusher..."

What happens next is very clear.

In order to destroy the corpses and eliminate traces of them, Zhou Haitao used a crusher to dispose of the corpses and then scattered the corpses in batches with backpacks into the kitchen garbage dump.

The kitchen waste dump where Zhou Haitao dumped his body was different from other kitchen waste dumps. It was not ordinary food waste from the school cafeteria, but bone fragments and other things left over from raw meat processed by students in the chef class.

It was a separately managed place and the smell of blood was very strong, so Zhou Haitao dumping his body in this place would not alert others at all.

"I cleaned everything up in two days, and then you came."

“Where are the hammer and grinder?”

"I threw the hammer in the trash. The grinder is in the laboratory on the third floor. After I used it, I cleaned it several times with soapy water. I also used the grinder to stir a lot of pork, so no one else noticed it.

What anomaly."

call……

Chen Yan let out a long breath.

There are seven crushers in the experiment on the third floor. Chen Yan has seen them all, but to be honest, no problems have been found.

Yeah, what's the problem with that?

The grinder will be cleaned after use, otherwise it will not be used next time.

Zhou Haitao not only used soapy water to clean it, but also used it to stir a lot of pork. Of course, Chen Yan couldn't find anything unusual.

"You kill people and dispose of corpses on the first floor, aren't you afraid of being discovered?"

"It's okay. During those two days, only our people had classes on the third floor. Everyone usually goes to the toilet on the third floor and never comes to the first floor. Besides, I put a maintenance sign at the door during those two days and locked it with a lock.

The toilet door is locked."

"No one would know at all. After I finished handling Chen Ziqiang's body and removed the locks, no one would notice."

"Where's the lock?"

"Throw it away, throw it into the trash together."

It looks like the murder weapon has been missing.

The garbage pile is cleaned once a day. The garbage from two days ago has been cleaned up long ago, but fortunately there is still a crusher.

But he couldn't give up, and he still had to try his best to look for it: "Chaoyang, talk to the garbage removal company and see if you can find the hammer and lock."

Zhang Chaoyang also knows that this hope is relatively slim, but he still has to give it a try.

What if I find it?

"Where's the plastic sheet you used on the day of the crime?"

"Burn it. The night I killed Chen Ziqiang, I put all the plastic sheets in my backpack and went to find a place outside the school to burn them."

Yes, no traces were left.

While Zhou Haitao was explaining the details of the murder, Li Yun also found evidence.

There are two cameras near the kitchen garbage dump where Zhou Haitao's body was dumped. One of them is facing the direction of the garbage dump. Although it is a little far away, Zhou Haitao's appearance can still be distinguished.

At this point, Zhou Haitao's whereabouts from the laboratory building to the kitchen garbage dump where he dumped his body have been fixed by surveillance.

This means that with tangible evidence, plus the fact that Li Yun and others dug out the backpack used by Zhou Haitao to dump his body in the small cabinet in Zhou Haitao's dormitory, the entire case can be considered completely solved.

Since the backpack has been cleaned by Zhou Haitao, no blood stains can be seen on the surface, but there are still some soaked blood stains in the internal texture.

One day later, the test results of the blood stains in the backpack and the test results in the garbage dump came out.

Comparing it with the DNA of Chen Ziqiang's parents, it was determined that these blood stains and tissue components were Chen Ziqiang's.

At this point, Chen Ziqiang’s disappearance case has finally been solved!

Liancheng Detective Team, Zhang Yunhu's office.

"Captain Chen, you are so awesome. A disappearance case was suddenly solved into a murder case!"

Chen Yan: "..."

Chen Yan, who almost spit out his tea, really wanted to run away. How could I have solved the disappearance case into a homicide?

"Captain Zhang, Chen Ziqiang was originally killed, okay? If you don't praise me, why don't you complain?"

He spat out the tea stems in his mouth and said, "Also, can you change this scented tea?"

"Didn't I give you a box of Dahongpao two days ago?"

"You have the nerve to say, just one box is enough for who to drink?"

Chen Yan: "..."

What you said makes sense!

"By the way, the leader is here today to ask you for leave. This is the leave note. Please approve it."

Um?

After receiving Chen Yan's leave request, Zhang Yunhu didn't hesitate and signed his name: "Where do you plan to go to relax this time?"

Generally speaking, detectives who have finished handling a homicide case will take a break to rest and adjust their emotions.

Zhang Yunhu would approve Chen Yan's request for leave no matter how many days it took.

"I haven't decided yet. Let's go back and discuss it with Yun Yi."
Chapter completed!