Panda Criminal Investigation Team

They have definite suspects,

But there is no evidence.Whether it's a dead body, a murder weapon, or a motive for killing,

All disappeared.And when the second team visited Yang Shuanglin and others again,

They were found to be quite relaxed.

when talking to them,

They still think slowly,

choose your words carefully,

But they're not as nervous as before,

There is always some slack in his words and deeds.This kind of laxity is not the same as the ease shown by truly innocent people. Ordinary people may not be able to see it, but experienced criminal police will definitely be able to detect the subtle difference.From the body language of Yang Shuanglin and others,

You can find a trace of hostility and provocation, very much like the criminals who got away with it in the court.

Day by day, new cases come and go,

Another month passed in a blink of an eye.Yu Renjie began to reflect on whether there were omissions,

Maybe they suspected the wrong person from the very beginning, no matter how suspicious Yang Shuanglin looked,

He couldn't figure out why the neighbor wanted to kill a little girl.But Cheng Bin is still stubborn,

what he was thinking was,

What made Yang Shuanglin and the others so determined,

I believe that I will not be arrested by the police.

There are three types of so-called perfect crimes.The first is the inability to unravel the trick,

That is, the criminal used superb modus operandi,

Investigators are misled and blinded, thus unable to see through the truth.The second is no evidence, that is, there is no sufficient evidence to prove that the perpetrator is guilty,

These include not finding the victim's body.The third is no law,

That is, there are loopholes in the law. Even if all the chains of evidence are known, the perpetrator still cannot be convicted.

This case clearly belongs to the second category. So far they have not been able to find the girl or her body, let alone the surveillance video and murder weapon.So, where did the girl's body go?Cheng Bin also thought of three possibilities.

"First, the body has sunk in the sea. A body tied to a stone sank to the bottom of the sea, and it may not be found for decades or even hundreds of years."

After listening to him, Yu Renjie fed a piece of potato chips into his mouth: "We walked along the road, and there was no sea or lake nearby. They went to Ge Cheng's house immediately."

Cheng Bin nodded and swallowed the potato chips: "The second possibility is that the girl's body was burned to ashes, and any DNA tissue was destroyed."

"But we didn't even see ashes, and burning a fire at home can only be regarded as barbecue, and the smell can make neighbors complain. Besides, burning it in a funeral home may not completely burn it all."

Cheng Bin thought it was reasonable, and reached out for potato chips, but Yu Renjie refused to give it. He said loudly, "You have already eaten five of my chips!"

Cheng Bin resentfully said, "The third possibility is that Yang Shuanglin used corpse-resolving water, the kind Wei Xiaobao often used in The Deer and Cauldron."

"You mean Shui Wang, right?" Yu Renjie added.

"Yes, it's the three-to-one ratio of concentrated nitric acid and concentrated hydrochloric acid." Cheng Bin deliberately mentioned the formula, so that Yu Renjie would know that he understood the knowledge: "There was a case abroad in the past, that is, a foreigner used corpse water to kill the dead. It was melted, but a drop of human oil was accidentally left hanging on the wall. Later, the investigators detected human genes based on the drop of human oil, and they caught the foreigner."

"Of course a foreigner is a foreigner!" Yu Renjie chewed on potato chips with a satisfied expression on his face.

"Listen well!" Cheng Bin was very dissatisfied.

In order to apologize, Yu Renjie handed over the bag of potato chips: "Listen, you continue."

Cheng Bin took the opportunity to grab a lot, which made Yu Renjie very annoyed, and immediately took the bag back.

"They are employees of a chemical factory. I wondered if they took the corpses to the factory and used aqua regia, is it called aqua regia?" Seeing Yu Renjie nodding, Cheng Bin continued: "But aqua regia is too corrosive. It is estimated that a layer of skin can be melted off the floor, there is no such trace in the factory, so I think this is unlikely."

"But it's not certain," Yu Renjie rarely refuted him: "Maybe there are special materials in the factory that are anti-corrosion. After all, it is a chemical factory."

"You think it's possible, too?"

"Yes, but please stop eating my potato chips."

Yu Renjie patted Cheng Bin's hand away, raised his head and poured the remaining potato chips into his mouth. The crumbs in the bag leaked out and got into his collar.

"When you mentioned it like this, I was thinking that if it was a chemical plant, it would be possible for people to be burned to ashes. Of course, I was thinking of a steel plant just now." Cheng Bin pulled up Yu Renjie's collar and shook it a few times , Potato chip crumbs fell from his clothes, but there were still a few sticking to his neck.Cheng Bin blew there, patted it a few times, and finally cleaned it up for him, but immediately found a few debris on the corners of Yu Renjie's mouth.

"You, you, what happened!" Cheng Bin raised his hand to wipe the corner of his mouth, but in the end he pinched his chin instead. He bent down and used his lips and tongue to clean up the debris for him. Like a big dog that has met its master.

"Fuck!" Yu Renjie said.

"Who made you so stingy that you wouldn't even give me a piece of potato chips!" Cheng Bin said forcefully.

When Yu Renjie wiped his mouth with his hands, he found that Cheng Bin was still licking his lips, which made him look full of lust and a little bit sexy.

But Cheng Bin didn't do anything further, but put the broom into Yu Renjie's arms: "I'm going out, so you sweep the floor quickly."

Yu Renjie stopped him: "You don't sweep the ground, where are you going?"

"I'll go to the factory to have a look. The air there is not good, so don't go there and stay at home."

"Then when are you coming back?"

"I will come back as soon as possible." Cheng Bin also felt very reluctant. When Yu Renjie asked this, he suddenly felt his nose sore, and he wished to turn around immediately and give him a good hug.

"As early as when?"

"When I'm not here, think about me more. When you can't help but want to see me, I'll be back." Cheng Bin turned his head away to prevent Yu Renjie from looking into his eyes, because once he sees him, he will find out There are tears in it.

"No," Yu Renjie said, "The fried chicken on the street next door closes at ten o'clock in the evening, so you should come back early and order a copy for me."

"You!" Cheng Bin took a breath and said a little lonely, "I know."

But Cheng Bin didn't line up to buy fried chicken for him. Yu Renjie waited for a long time until he fell asleep on the sofa, and Cheng Bin didn't come back.Until a ringtone woke him up, Yu Renjie found that the time had jumped to 07:30 in the morning.

"I found a clue!" Cheng Bin told him in the microphone: "Come here quickly, I will tell you on the spot!"

Yu Renjie found that he was very hungry. For that fried chicken, he didn't eat anything all night: "We'll talk about it after I have breakfast."

"Don't eat, you come here first!"

"Okay, I'll come right away."

It only took Yu Renjie 10 minutes to arrive at the factory. At this time, the factory shuttle bus for picking up white-collar workers had just arrived, and the employees were yawning.Cheng Bin took him to a simple workshop, which was small and dilapidated just behind the largest workshop in the factory.There was no one in the workshop, just a pile of machines and accessories, dusty and rusty, looking like they were used to pile up waste.But just behind this pile of waste, there is a long machine with pipes inserted, and the surface is painted with a layer of green paint, which looks very fresh.This machine looks very clumsy, like a toy made of two oil barrels spliced ​​horizontally and vertically.

"This is an incinerator." Cheng Bin said, "Hu Yong is responsible for the purchase."

Only then did Yu Renjie remember that Hu Yong was in charge of the procurement and management of fixed assets in the engineering department. He was in a daze for a moment, and then he came to his senses: "You mean..."

"They used this machine to burn the corpse." Cheng Bin said in a deep voice.

Yu Renjie felt his scalp go numb: "What do you find, tell me quickly."

"Of course, but I will speak quickly. You must be hungry before you have breakfast."

After staying up all night, Cheng Bin was tired. He scrubbed the floor with the soles of his shoes and sat down on the spot.Seeing this, Yu Renjie also sat down, his knees naturally resting on his knees.This gave Cheng Bin an illusion, as if the two of them hadn't slept all night, and he told him stories all night.

"I went out at seven o'clock last night." Cheng Bin looked at him and said, "It was almost eight o'clock when I got here."

"It's about this time." Yu Renjie said.

"I found the production manager on duty here and asked him to call the HR manager, and she agreed for me to visit their production process throughout."

"It's probably because you look too scary, they dare not disagree."

"Be serious," Cheng Bin glared at him, "Don't keep forgetting that I'm your boss!"

"Captain Cheng, why did you grow a beard?"

Cheng Bin stretched out his hand to touch his chin, and indeed touched a piece of short and hard stubble, and Yu Renjie's caring words made his heart soften, so soft that it couldn't be more gentle.

"Thinking of you," Cheng Bin said to him, "After thinking about you all night, the beard has grown so long."

"No," Yu Renjie said, "I just want to say that after you grow a beard, you look even scarier."

Ignoring his lover who was laughing so hard, Cheng Bin rubbed his chin and said, "I asked the production department to borrow work clothes and armor, and went to the factory to watch them operate. This time, I finally understood their production process. It's like this..."

"Get to the point!" Yu Renjie interrupted him.

"Okay, you don't understand anyway." Cheng Bin sneered: "In short, their work is exactly as the HR manager said, rigid and fixed. Everyone is only responsible for the work in front of them, and the pace is fast. , it will not work if anyone is missing during production. I also observed that when they rest, it is indeed only 15 minutes. During these 15 minutes, everyone has to drink water and go to the toilet, and they have to queue up to go to the toilet. The actual time is very long. nervous."

"15 minutes is not enough to fill our fat stomachs, and it is not enough for us to poop with kimchi."

"Can't you speak more politely?" Cheng Bin said, "But even so, it's not impossible to sneak out and do something in 15 minutes."

"Are you saying they're coming off the production line during breaks and sneaking in here to dump the bodies?"

"What I'm talking about is just a hypothesis, but I don't think it should be."

Yu Renjie glanced at him: "Go ahead, talk about something important."

"Oh, don't worry, I'm already fast." Cheng Bin said: "After looking at the entire production line, I didn't find anything that could burn or melt corpses. They produced polyethylene, and epoxy and so on. I forgot the name of the product, and the maximum temperature during processing is only 220 degrees, which is not enough to cremate the human body, and it is also impossible to throw the corpse into it in front of so many people."

"That's still nonsense."

"Sounds good! At this time, I used my brain. I asked the production manager and asked him if he could take me to the laboratory to have a look?"

"Clever! There may be aqua regia in the lab."

"I think so too." When Cheng Bin heard Yu Renjie praise him, he couldn't help showing a smile: "At this time, the production manager called the colleague in charge of the laboratory and asked him to obtain approval to use the laboratory. The experiment The room supervisor originally refused to agree, but I snatched the phone and after a few words, he agreed."

He stopped, expecting Yu Renjie to ask him how he persuaded the director of the laboratory, but Yu Renjie just raised his eyebrows and said, "It must be because your voice is so scary that people dare not refuse."

"Get out!" Cheng Bin was still not relieved after saying this word, so he said again: "You fart!"

But Yu Renjie refused to enter, and only gave him a blank look, so Cheng Bin had no choice but to continue to say: "In the end, I went to the laboratory and walked around from the inside to the outside. Not only did I not find aqua regia, but even concentrated nitric acid. Didn't see it."

"Any other highly corrosive reagents, such as hydrofluoric acid?"

"Hydrofluorine..." Cheng Bin didn't know what it was, so he decided to ignore it: "This factory produces plastic particles, which are polymer materials. The laboratory is full of organic substances, and there are not many bottles of reagents. None of them are very corrosive. The laboratory is mainly equipped with instruments, various machines for measuring hardness, viscosity, fracture extreme value and stress deformation.”

"I understand, you continue."

"The conclusion is that there is nothing in the laboratory." Cheng Bin said briefly: "I asked the production manager and the laboratory supervisor, and they all said that there is no need to use corrosive reagents like concentrated nitric acid in production and experiments. , so this road is also blocked. From the production workshop to the laboratory, there is nothing I am looking for."

"Then how did you find out here?"

"After searching for so long, I still found nothing. I almost thought I was wrong. But in the early morning, a worker said that he was going to collect the moulds. I followed him and found this place. The machine was still on at the time. .”