I am a super cop

Chapter 806 Diatom Detection

Feeling like a foodie, there will be such a day, Officer Wang said to himself that he has caught your life, Lu Weiwei, and he is afraid that he will not be able to cure you, a little girl, in the future?
But at this moment, not only Lu Weiwei, but also the young police officers Ding Liang and Huang Zunlong also had symptoms of nausea to varying degrees.

The two are in good health, but the corpse is too disgusting to bear.

Judging from the surface, the corpse had obviously been silent in the lake for several days, and its body was covered with aquatic plants and crabs.

It can be seen that the corpse has already become the food of the aquarium.

However, when everyone was disgusted, they discovered that only Gu Chen and Officer Wang on board did not have any symptoms.

Especially Gu Chen, who jumped directly into the lake and dragged the corpse onto the splint.

Police Officer Wang is an old comrade. During the years he served with Zhao Guozhi as a police officer, he has seen more mutilated and disgusting corpses than this one.

At that time, I got used to spitting and spitting...

So look at it now, all of this is pediatrics, only a rookie would vomit, and Officer Wang can't afford to lose this guy.

Seeing that Ding Liang was no longer suitable to be a "captain", Gu Chen took the initiative to step up to the bridge and said, "You guys sit back and have a rest, I'll steer the boat."

"Okay, then I'll leave it to you." After Ding Liang handed over the driving, he wobbled back to an empty seat.

Just now he was joking about Xiao Gang being seasick, but now, he was disgusted by the corpse.

Gu Chen started the speedboat and drove directly towards the shore.

The lake was cool and breezy at night, but on the way back, everyone on the plywood kept smelling the stench of corpses.

While sailing the boat, Gu Chen said to Police Officer Wang, "Brother Wang, by the way, contact the Technical Section of the Municipal Bureau and ask Liu's forensic team to come over."

"No problem." Officer Wang took out his mobile phone and started contacting Forensic Doctor Liu directly.

A decomposed corpse like this must also rely on the professional inspection of the forensic team to confirm the identification of the corpse.

When they returned to the shore, the manager of the Yangtian Lake Hotel, as well as some company employees, were already standing on the shore and waiting anxiously.

As soon as the boat docked, a man who looked like a manager hurriedly called his men to help fix the rope.

"Hurry up and tie the rope."

"Then who? Give me a hand and bring everyone who is seasick."

"Where's the water? Quickly bring a few bottles of mineral water and wash them up."

Seeing that Gu Chen boarded the pier all right, the man who looked like a manager hurried over to say hello.

"Comrade policeman, I didn't know you were visiting late at night, so why are you sailing by yourself? If I knew you were going to the middle of the lake, I would have asked a few more people to accompany you there."

"Are you the manager?" After listening to the manager beeping for a long time, Gu Chen asked him.

"Yes." The manager nodded silently, quickly took out a business card from his pocket and handed it to Gu Chen: "I am the manager of Yangtianhu Hotel, my name is Xiao Lei, and this is my business card."

Gu Chen caught it with both hands, and then asked: "Do you know that Liu Biao, a staff member of your hotel, is missing?"

"I know, how can I not know, this guy probably hid his debts."

Seeing Gu Chen's sharp eyes, Xiao Lei frowned: "Comrade police, you are here late at night, you are here to look for Liu Biao, right?"

"You guessed it right." Gu Chen didn't play around with him, and said straightforwardly: "Liu Biao is involved in a case, and we are here to find him today."

"But Liu Biao's roommate Xiao Gang told me that Liu Biao had been missing for a while, and before he disappeared, he even wore shoes to sleep."

"You have to wear shoes when you sleep?" Xiao Lei frowned slightly when he heard this: "I've never heard of this, but Liu Biao often causes troubles, and there are probably many people who make trouble for him. We feel that He should have gone out to hide from debts."

"Then what about this corpse?" Gu Chen stepped aside and pointed at the corpse on the splint of the speedboat.

"Corpse?" Xiao Lei was stunned, then hurried to the pier and glanced at the splint of the speedboat.

Suddenly, Xiao Lei's cheeks bulged, he quickly covered his mouth, and ran back to Gu Chen's side.

"This...what the hell is this? Why is there a corpse? This corpse...how is this corpse still so mutilated?"

"Corpse?"

It was the first time that the people who had patronized the crowd to join in the fun had their eyes fixed on the splint of the speedboat.

At this moment, the mutilated and headless corpse was lying flat on the splint.

After a while, several waitresses suddenly let out a scream, and quickly got into the arms of the male waiter.

At this moment, Gu Chen called Xiao Gang and Xiao Lei together, pointed to the mutilated corpse on the splint and said, "Look carefully, the clothes this man wears, and other features, can you tell who he is? ?”

"It's...it's Liu Biao." Xiao Gang's face was pale, but he said with certainty, "I recognize the clothes, and they were indeed worn by Liu Biao the night he disappeared."

"Are you sure?" Officer Wang hurried forward.

Xiao Gang nodded silently: "It's not wrong, the logo on the pants is also the same, it should be Liu Biao."

The voice fell, and the scene suddenly became quiet.

Everyone froze there.

With Xiaogang's confirmation, Gu Chen felt even more that things were definitely not that simple.

According to the known clues, it can be basically concluded that Liu Biao, who wore shoes even to sleep, seemed to be chased that night.

Then escaped through the window and drove the boat into the lake?

Of course, this is just Gu Chen's first speculation. This kind of escape is voluntary escape, and he fell into the water and died due to improper operation in the center of the lake.

But Gu Chen has another speculation, that is, after Liu Biao was killed, he drove his boat and discarded it in the lake, and then the murderer destroyed the boat, creating the illusion that Liu Biao was in a boat accident.

But no matter what the situation is, why Liu Biao escaped is the key.

"Junior Brother Gu." Lu Weiwei, who had recovered somewhat, stepped forward and asked, "How to deal with the corpse?"

"Bring it up." Gu Chen glanced at the mutilated corpse.

Obviously, to carry the corpse to the shore without damaging the corpse a second time, it is obviously impossible for one person to operate it.

Gu Chen turned his head to look at Xiao Lei, and said, "Manager Xiao, please ask some people to carry the body ashore with me."

"No problem." Xiao Lei readily agreed, then glanced at the male waiters beside him and said, "You guys, help the police comrades carry the corpse."

"I'm not going, it's too disgusting."

"That's right, the head is gone, this is too scary."

"Whoever wants to go will go, anyway, I won't go."

"Hey!"

Seeing all his subordinates retreating one by one, Xiao Lei was furious, and also urged: "If you can't handle such a small matter, what do you think you are good for? Every old man looks like a girl. "

"manager."

Seeing Xiao Lei's boastful words, a tall and thin male waiter said: "Since you are a gentleman, then you can help comrade police carry the body."

"Yes, you go."

"Manager, you should give full play to the leading role of the leader."

Seeing that the style of painting changed so quickly, Xiao Lei was also unexpected.

Just when he wanted to use his sprained waist as an excuse, Gu Chen put his arm on Xiao Lei's shoulder.

"Manager Xiao, it seems that I can only trouble you. Put these on." Gu Chen handed him a pair of white gloves.

"Oh no, I... my waist..."

"If you want to act, hurry up." Before Xiao Lei could finish speaking, Police Officer Wang rushed the duck to the shelves and pushed Xiao Lei to the side of the boat.

Seeing that Gu Chen and Police Officer Wang had already boarded the ship, and the subordinates behind were all staring at him, Xiao Lei was a little bit stuck, so he could only bite the bullet and agree:
"Okay, okay, I'll give you a hand, isn't it just a corpse, what's the big deal?"

5 minutes later……

When the body was laid flat on the stone bricks of the pier, Xiao Lei squatted aside, vomiting so much that he almost collapsed.

"Are you okay, Manager Xiao?" After cleaning up some aquatic plants on the corpse, Gu Chen turned to ask Xiao Lei who was exhausted behind him.

"Hold...you can carry it, don't have any problems, vomit..."

After the words fell, Xiao Lei vomited again, and the whole air was instantly filled with a sour taste.

Everyone on the side of the road pinched their noses and retreated, feeling that they should keep a distance from Xiao Lei.

Police officer Wang walked up to Gu Chen, pointed at the headless corpse and said, "This Liu Biao is really unlucky. He didn't even have a complete body after his death. What kind of things are raised in this Yangtian Lake? Is it a man-eating devil?"

"It may be the bad luck brought by the blood on Liu Biao's body. It is possible that he was killed and then thrown into the water. But now the head is gone, and the body is gradually rotting. If you want to know the answer, you have to Can carry out diatom test.

"Diatom test?" Lu Weiwei didn't know what to say when she heard the words, "But what are diatoms?"

Gu Chen glanced at Lu Weiwei, and also explained seriously: "This diatom is a collective name for a single-celled plant with a pigment body. It can be as small as a small puddle formed by rainwater, or as large as the ocean that accounts for 71% of the earth's surface. , almost all traces of diatoms can be seen, and in the world, there are more than 1.6 species of diatoms."

"So many?" Lu Weiwei looked at the aquatic plants on the corpse, and said involuntarily, "I see, but why is the diatom test required?"

"Didn't I just say that? Diatoms are a type of single-celled algae." Gu Chen looked at Lu Weiwei's studious attitude, and patiently explained:
"If they are present in the body and are the same as the diatoms in the water, then they can tell us whether the deceased entered the water while they were alive or after they were already dead."

"With this test, they can tell us whether he died by drowning, which is very important for postmortem examination, especially with such mutilated bodies."

Lu Weiwei nodded like a chicken pecking at rice: "I seem to understand, I feel that Liu's forensic team should be familiar with this kind of test."

Glancing at Gu Chen, Lu Weiwei immediately smiled and said: "However, Gu Shidi has learned a wide range of things."

"It's okay." Gu Chen said with a smile: "The main thing is that the forensic medical record given to me by forensic doctor Liu is very helpful."

"It's also a learning process, so I store this knowledge in my memory bank so I can apply what I've learned."

"That's true, Junior Brother Gu has never disappointed people." Lu Weiwei has always been Gu Chen's little fan.

Especially Gu Chen's strong learning ability can always benefit Lu Weiwei a lot.

So Lu Weiwei continued to ask with a humble and learning attitude: "But how to carry out this kind of diatom test?"

"We need to take a femur from the corpse for testing," Gu Chen said.

"Take a femur?" Lu Weiwei felt a little interesting, and said with a smile: "Then how much is appropriate?"

Gu Chen shook his head and smiled, "I'm not familiar with this either. After all, I only know the principle, but I haven't seen the actual operation."

"If you asked me how long a piece of bone would be needed for this kind of test, I wouldn't know, and if I were to do it, I'd worry that I'd take too much or too little."

"What's there to worry about?" Police officer Wang standing aside couldn't help complaining: "I'll tell you what to do, anyway, there is nothing left on this guy."

"If it were me, I would give you both of his complete femurs, and you can take as many as you want."

"You think you're selling meat, old Wang, this has to be extracted scientifically, please be rigorous, and don't talk nonsense if you don't understand." Lu Weiwei hates Police Officer Wang's bullshit.

It feels like Police Officer Wang pretends to understand.

Even Gu Chen, a top student who knows the principles, dare not jump to conclusions without practice.

Pharaoh was fine, and his mouth was full of fragrance.

Police Officer Wang said indifferently: "Actually, they are almost the same, but you are taking the problem too seriously."

Several people had some small disputes in the process of discussing the extraction of the femur.

"Okay." Gu Chen interrupted the conversation of several people, and then said to Lu Weiwei: "Senior Sister Lu, please take a picture of the corpse."

"Oh, no problem." Lu Weiwei almost forgot to take a photo to collect evidence.

Although a few pictures of the scene were taken on the boat, the light was not good at that time, and the water plants were entangled, so it was difficult to see the specific condition of the corpse.

However, Lu Weiwei took the opportunity to take a lot of photos of Gu Chen in only his underpants.

When they came to the shore, under the illumination of the street lights, the specific condition of the corpse became much clearer than before.

Lu Weiwei began to collect evidence from the corpse from different angles.

While taking pictures, Lu Weiwei's mouth was never idle, and she kept thinking:
"It's all rotten like this. The only thing that can make you talk again is diatom detection technology."

"Diatom detection, is this thing reliable?" Ding Liang asked after washing his hands with mineral water with Huang Zunlong's assistance.

Gu Chen nodded slightly: "A corpse in water, especially a highly decomposed corpse, how to judge whether the deceased drowned, or was thrown into the water after death, and where did he enter the water?"

"These detection technologies have actually been studied by scientific research teams a long time ago."

"Especially the Yangcheng Institute of Criminal Science and Technology, also known as the Criminal Division, this topic has always been the research direction of their forensic team."

Seeing everyone's serious faces, Gu Chen took the opportunity to explain the situation clearly to everyone.

"Actually, a few years ago, when the annual National Science and Technology Award Conference was held in Beijing, the 'Key Technology and Equipment for Forensic Diatom Inspection' project of the Yangcheng Criminal Bureau won the second prize of the National Science and Technology Progress Award."

"And a few years earlier, this project also won the first prize of the annual Ministry of Public Security Science and Technology Award."

"It is this kind of technology that can focus on actual combat and let the corpse 'speak', which can be said to be a remarkable technological advancement."

When Police Officer Wang heard this, he also thoughtfully recalled: "Gu Chen, I seem to have seen internal reports a few years ago about what you said."

"Yes, when I was in the police academy a few years ago, I also heard my instructor explain this technique, because he is from Yangcheng."

"And I heard that several of my seniors who are engaged in forensic work used the key technology and equipment of forensic diatom testing in the Yangcheng Criminal Bureau to help them solve the major problems encountered in the investigation."

"So when you go to the Criminal Division in Yangcheng City, you will find that their walls are covered with banners from public security agencies all over the country."

"And these pennants were specially sent by the forensic doctors of the institute after they helped them solve the problems encountered in the investigation by using the diatom testing technology."

Huang Zunlong, who took off his gloves, also thought about it when he heard the words: "Is this technology really so powerful? Then if the corpse is found in the lake, and the corpse has completely rotted into bones, how do you detect this situation?"

"Then it must be impossible to detect it? It's all rotten to the bone? How can it be detected?" Lu Weiwei also had the same doubt when she heard this.

Gu Chen hesitated for a few seconds, and then used his professional memory to quickly activate his brain.

A few seconds later, Gu Chen calmly said, "Actually, in May four years ago, there was such a case."

"At that time, it was a male corpse, which was found in a pond in a remote mountain in Hubei Province, and the corpse at that time was completely decomposed into bones just as Huang Zunlong said."

"After DNA comparison, the man was a beekeeper. He set off to collect honey in the mountains that year, and then disappeared."

"But when the missing person is found, what everyone faces is a dead body."

"Then how do we determine the cause of his death?" Lu Weiwei asked.

Gu Chen smiled indifferently: "Of course, I will hand it over to the forensic doctors of the Yangcheng Criminal Bureau. After all, they are professionals in this area."

After a pause, seeing that everyone was unclear, Gu Chen said again: "Because there were only bones left in the body at that time, and there was no body tissue to extract."

"So this case, if we use traditional diatom detection technology, it is completely impossible to detect it."

"So?" Ding Liang asked.

"So? So the Yangcheng Criminal Bureau, using their innovative diatom detection technology, finally successfully detected the presence of diatoms in the bone marrow of the corpse's white bones."

"And after comparison, this is consistent with the diatoms found in the corpse pond, so it can be determined that the person died by drowning."

Just as Gu Chen was explaining, a few lights suddenly shone in the distance.

Gu Chen blocked the light with his hands, then stood up to observe carefully, and found a group of figures in white coats approaching.

"Is it Forensic Doctor Liu?" Gu Chen yelled loudly.

Soon, there was a response from Forensic Liu on the other side: "That's right, it's me."

"Gu Chen, when I received a call late at night, I knew it was the three groups of you who were looking for me." Another figure beside Forensic Doctor Liu, Gu Chen could hear the complaint of forensic assistant Gao Chuanfeng.

……

(End of this chapter)