First, why did Zhang Yunfa kill people?

Second, how did Zhang Yunfa catch Su Yu and Jiang Zhu?

The interrogation of Zhang Yunfa has not yet been carried out because the physical evidence found in Zhang Yunfa's orchard has been still being sorted out.

There is no way to distinguish the things in the mixing iron tank, but the things in the freezer are doing DNA identification.

Because I also found two right arms in the freezer.

Obviously, Zhang Yunfa killed more than Jiang Zhu and Su Yu.

All work was carried out overnight, and the DNA information extraction of all limbs in the freezer was finally completed at four o'clock in the morning.

Conference room.

Chen Yan, Liu Qingshan, Zhang Chaoyang and others were smoking cigarettes silently. The four ashtrays on the table had long been filled with cigarette butts.

But no one spoke, and everyone bowed their heads and said nothing.

There is no doubt that this is a serial killing case.

Now, at least four people were killed.

Bang!

The conference room door is open, it is Wang Gang.

"Captain Chen, I won the competition!"

A total of four people's DNA information was extracted from the freezer.

"In addition to Su Yu and Jiang Zhu, there are two missing persons from last year and the previous year."

"One is in Liancheng and the other is in Tie City."

Wang Gang brought photos and information about the other two missing persons.

Both missing women were young women, one in July last year and the other in September last year. The specific time was at night, and they were both wearing white dresses when they disappeared.

"Accuse Zhang Yunfa immediately!"

Interrogation Room No. 1.

Zhang Yunfa was already in handcuffs and shackles and was locked on the interrogation chair.

When I saw Zhang Yunfa again, his body still had the smell similar to disinfectant.

Even though the prison uniform has been replaced, the smell is still very strong, just like it emits from Zhang Yunfa's bones and will never be cleaned, like a maggot with bones attached to it.

"Hello, Officer Chen."

The broken arms were now covered with plaster, and Zhang Yunfa's eyes were still smiling in the orchard.

He seemed very kind and took the initiative to say hello to Chen Yan, without any grudges because Chen Yan broke his arms.

However, the more calm Zhang Yunfa was, the deeper Chen Yan's brows frowned.

He was arrested for murder, but his face remained unchanged. This person...

Either he is stupid or killing someone, it may be as simple as eating and drinking water.

"Zhang Yunfa, we found it in your orchard..."

"Officer Chen, you need to say nothing, I will explain everything."

Zhang Yunfa's performance surprised Chen Yan a little. Chen Yan had seen the murderer who took the initiative to confess his crime.

But it was the first time Chen Yan saw Zhang Yun so calmly.

"I killed four people in total, last year, one each year ago, and two this year."

Speaking of killing a few people, Zhang Yunfa's expression still did not change at all, with a calm smile on his face, which seemed to be saying that he had killed a few chickens.

"Zhang Yunfa, do you have a grudge against these people?"

Zhang Yunfa shook his head: "No, I don't even know them, nor do I know their names."

"Then why did you kill them?"

“To improve the technology.”

“What technology is improved?”

“Anatomy…”

It turned out that when Zhang Yunfa took the college entrance examination ten years ago, he did not get into college because of his poor grades.

Zhang Yunfa was determined to be a doctor at that time, but because of his poor grades, his score in the college entrance examination was very low and he had not even passed the score line for technical secondary school.

After that, he repeated his studies for three consecutive years and still failed to get into any school, Zhang Yunfa went home to learn how to plant saplings with his father.

Three years ago, Zhang Yunfa completely took over the nursery left by his father and started running it himself.

"Although I was not good at academic performance back then, I was a good person to study. Three years ago, I found that mixing some meat and some seedling nutrients can speed up the growth rate of seedlings."

"At the beginning, I used some pork for experiments, and the results were pretty good."

"But two years ago, I saw in a novel that someone buried his body under a tree, and the trees grew very well."

"I just wondered if I could get some in my nursery."

"It just so happens that I can also study human anatomy."

What Zhang Yunfa said... are all true.

In Zhang Yunfa's nursery residence, inspectors found two anatomy books and some CDs.

Books are medical textbooks, and have been flipped through the edges, with dense notes on them.

The contents of the CD are some anatomical cases, which are all anatomical processes of white people and should have been made from abroad.

"Not to mention, using people as fertilizer is much better than pork. The trees in my nursery grow better than other people's."

Chen Yan and Liu Qingshan looked at Zhang Yunfa who was talking, and seemed to have an indescribable weirdness.

Zhang Yun's expression was very natural, and it felt as simple as a butcher killing a dog.

An hour later, Zhang Yun posted on his own account of the murder process.

"Why did you brand the plum blossom mark on the corpse?"

"You said this... I think I should remember one thing if I kill them."

"That plum blossom iron belongs to my second uncle's house. His family originally raised horses. If you brand this plum blossom mark, it means that the horse belongs to his house."

"Later, his family stopped raising horses, so I followed this mark and used it."

"Zhang Yunfa, we found a laceration on Jiang Zhu's body. Are you..."

"No!"

"I didn't do that!"

Zhang Yunfa's reaction was much stronger than Chen Yan imagined: "I killed people, but I didn't do that. You can't insult me!"

"Okay, let's not talk about this for now, why did you throw Jiang Zhu's body away?"

"And what happened to the car accident that day?"

"This, I have a habit of throwing a part of the body of every person I killed back to the place where she was caught."

"Why?"

"This is called sending corpses back to the hometown. Don't you know that if a person's body does not return to the hometown after death, it will turn into a ghost."

"I'm afraid they will turn into evil spirits and pester me, so I will definitely help them return the bodies to their hometown."

"But I don't know where these families are, so I will catch them wherever they will send part of the body back."

"Then why only part of it is sent back?"

"Because I want to plant trees with fertilizer for the rest."

madman!

This Zhang Yunfa is a lunatic and a mentally ill.

Chen Yan suppressed his anger: "Car accident! What happened to the car accident that day?"

"That, I killed that woman in the early morning of the 6th. After breaking her down, I put all her parts into plastic bags and put them in the trunk of the car."

"I have a habit of choosing when throwing the body, so I have to bring all the parts with me."

"As a result, I threw the thing into the trash can in the alley when the woman was caught, and drove to Linjiang Road and met a fool."

"I was driving well, so he just pressed the yellow solid line and hit me!"

"Fuck, if the car hadn't been smashed, I'd have killed him. That idiot must have been drunk driving. You have to catch him!"

Chen Yan is now increasingly suspicious that Zhang Yunfa is mentally ill. You kill someone and others are driving drunk. Do you want us to arrest him?

You're not sick in your brain.

If it weren't for this drunk driving bastard, it would be unknown whether the eucalyptus could be broken.
To be continued...