"You don't understand." Yan Junli shook his head and said. The police force in City C is already weak. The number of police officers on the criminal side is also small. There are not many people who can really do things. The city's police force is equivalent to a total paralysis. The enemy can be said to have held our dead end."

Yang Wenbin was silent for a while. After a few seconds, he spoke slowly. That's it. It turned out that it was unjust in itself. That's why you don't want to tell me."

Yan Junli sighed. Well. But there's no way around it. If you can. I don't want to do that either. Now there's only the only way to sneak inside the gang. Find out how the other person got the information. Catch them off guard again."

"That's not right." That's when the . Yang Wenbin said suddenly. It's not a drug overdose."

"Hmm." Yan Junli almost didn't react from the sudden change of words. That's the cause of death."

"Look." Yang Wenbin's scalpel blade pointed at the corpse's slashed chest." The corpse had severe edema in the lungs. It is true that an overdose of drugs can lead to edema in the lungs. But I didn't see the usual symptoms of drug overdose on corpses. An overdose of drugs can first lead to respiratory arrest, heartbeat arrest, and stagnation of blood circulation. The lips are dark red at first and slowly turn white at the end. Finally, bruising. Deep depression of the central nervous system after an overdose can also cause the deceased to bite his tongue."

Yan Junli and Li Hong went up to observe. Really. The tongue of the corpse is intact. There are no signs of being bitten. There was no bruising on the lips either.

Then Yang Wenbin put the corpse's arm in front of the two of them. The veins and arteries in the arms were cut separately." And then. Although the blood of the corpse has coagulated. But you can also see the difference in the color of the blood. The average person's arterial blood is bright red. Venous blood is dark red. Even if it's poisoning. It should also be black and red to be normal. But the corpse's blood is cherry red. And the blood in the veins and arteries is the same color."

"Carbon monoxide." Li Hong reacted immediately. Yell.

"That's right. It's carbon monoxide poisoning." Yang Wenbin smiled. Even if the corpse is injected with poison or products after death. The poison also cannot circulate through the heart to every part of the body. The distribution is also uneven."

Yan Junli was confused when he heard it. He said with a pause gesture. Stop, stop, stop. Can anyone explain to me this illiterate person . What does carbon monoxide poisoning have to do with the color of the blood?"

"No, I won't. Yan Team. Don't you even know that?" Li Hong said in surprise. The principle of carbon monoxide poisoning is that the affinity of carbon monoxide to hemoglobin is 200 times higher than that of oxygen to hemoglobin. In other words, carbon monoxide is very easy to bind to hemoglobin. It makes hemoglobin lose its ability to carry oxygen. Causes tissue suffocation. Hemoglobin, which carries carbon monoxide, gives the blood a cherry-red color. And because carbon monoxide is so hard to get rid of. Even venous blood will be the same color."

"Alright, alright. I see." Yan Junli hurriedly waved his hand. muttered. A master's student and an undergraduate student. They all bully me, a person with a low education."

Li Hong laughed "hehe". But there are three of us inside. You're the boss, aren't you?"

After some checking. Sure enough, all the corpses were the same cause of death. It seems that the murderer should be a master of poison who is proficient in medical science.

"Killing two birds with one stone." Yang Wenbin after all the corpses were examined. Breathe a sigh of relief and take off your gloves." It's a declaration of war on skeletons. It is also a declaration of war against the police. At the same time, the cause of death is perfectly hidden. Three birds with one stone are. As far as the description of the skeleton is concerned. That stone certainly can't have such a skill. It looks like it's really relying on some kind of force."

"The enemy is dark and I am clear. It's a tricky task." Yan Junli whispered.

"Speaking of which......" Yang Wenbin seemed to suddenly think of something. Sluggish for a moment. asked. That skeleton before leaving. Did I tell you something...... Meet at the laundry. What a laundry."

"See you tomorrow. I'll talk about it tomorrow." Yan Junli, who had been standing in front of the dissecting table and had a sore body, stretched his waist. Yawned. Announcing the call it a day." Too late. Let's go back and get some rest."

Where Yan Junli lives. Some distance from the city center. Every day after work. Yan Junli sat alone in his black Volkswagen. Walk through the streets that are lit up at night. Until the darkness at the end is no longer so blurry. The lines of the night are delicate in front of you.

Only this time. Yan Junli can no longer play music like before. Humming a little song and going home. Yang Wenbin said the sentence inadvertently. It still rings clearly in his ears to this day.

..“ It turned out that it was unjust in itself. That's why you don't want to tell me."

Yan Junli tightens the steering wheel. Viciously swerved.

The next day. Yan Junli as agreed. Go to the door of the police station to pick up Yang Wenbin. The latter was taken aback when he saw Yan Junli's face.

"What's the matter with you. The eye circles are so heavy. Didn't you sleep well last night?" Yang Wenbin said as he pulled the car door and sat in the co-pilot's seat.

"Hmm." Yan Junli replied without much strength. Holding a cigarette in one hand. Hold your forehead with one hand." Had a nightmare. A little insomnia. It doesn't matter. Don't delay our trip today."

After all that's said. Yan Junli started the car. The right hand has just been put into gear. I heard a familiar shout from outside.

"Team Yan. Yan Team. Wait for me." Li Hong gasped and ran to the front of the car. Knocking on the window." I'll go with you."

Yan Junli rolled down the window. The probe asked. Aren't you going to stay and keep a record of the dead?"

"Xiao Zhang said that he happened to be alive today. Just help me write it." Li Hong said as he sat in the back seat of the car. It's better to go undercover with Team Yan."

"You little ghost. What to say. It's not play." Helpless due to location limitations. Yan Junli wanted to beat Li Hong but couldn't. The latter grimaced in return.

This scene made Yang Wenbin smile as well.

Is. Obviously going undercover. But it made it like going on an outing.

"Skeleton is a ruthless man. But the bold and careful." Yan Junli's eyes looked at the road ahead. His eyes sank. He doesn't kill innocent people. It's just that he knows that sooner or later he will be killed. Definitely not because he's kind or kind. He once took a betrayal of his own subordinates and let the dogs bite alive into hundreds of pieces. Then shave the ribs of the corpse one by one. Make a harp. Sent it to another betrayer. It didn't take long for that person to be tormented by fear. I killed myself."

After the two listened. They all trembled subconsciously. Showed a look of disgust.

But if you put aside all the qualities of this person. He alone is more cautious and careful than mortals. I still admire it very much." Yan Junli continued. That guy just has to shoot. Flaws are almost never revealed. Whether it's killing. Or drug trafficking. The police couldn't do anything about him. Because his superficial identity is just too perfect. I still can't figure out how he did it."

"Superficial identity." Yang Wenbin asked.

"The skeleton's real name is Zhou Mu. At least the name on the account register. He is the grandson of the chairman of the Zhou consortium. His father was the general manager of the consortium. And he inherited many of Zhou's properties. Including movable and immovable property. It can be said that he is a rich second generation without worries."

"No......" Yang Wenbin and Li Hong both looked incredulous. If he were such a wealthy man. Why do you want to do the work of the underworld?"

"No one knows what this guy thinks. Probably some people are born to be the material for the wicked." Yan Junli shook his head. In a word. Skeletons are a perfect job in the criminal business. Probably no one can surpass him. One of the reasons for this is that he owns a large number of enterprises and factories under his name. Any factory can be used to make drugs. Any business has the ability to tamper with its accounts. Perfect cover-up evidence."

Li Hong couldn't help but swallow a mouthful of saliva. This man is really very good."

"You're a police officer. I know everything about this criminal." Yang Wenbin pointed out keenly.

"Ahh I'm afraid I'm the one who knows him best besides his parents." However, Yan Junli still had no intention of explaining. Deftly avoided the topic again." In a word. Always be careful when dealing with this person. The laundry where he asked us to meet was one of his drug dens. This kind of time. LI Hong. Especially you. Put down your identity as a police officer and shelf. During the undercover period. We're just his men. Our true identity must not be discovered by anyone. Of course, you can't use your real name. As long as we have a fourth person by our side. Just use the code name to match. I'm a black cat. Yang Wenbin is a doctor. And then you ......"

Speaking of which. Yan Junli paused. You're Xiaohong."

"Why am I the only one being called that?" Li Hong shouted aggrievedly.

Yang Wenbin couldn't help but laugh and said. How cute."

"You two. Don't always think of me as a child. I'm also a man with a girlfriend."

The three of them were noisy along the way. The car is still driving smoothly on the road. Ahead. Unknown dangers and mysteries await them.

"This place...... It's huge." As soon as I walked into that laundry. Li Hong couldn't help but sigh.

You can't blame Li Hong for being rare and weird. The size of this laundry is at least provincial. The space inside is at least the size of an entire school. Huge boilers, conveyor belts. There are also thousands of cloths and busy workers. It's really dazzling to look at.