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803, Diatom detection

I feel like foodies will have their day. Officer Wang said to himself that he has caught your life, Lu Weiwei. Are you afraid that you, a little girl like you, can’t be cured in the future?

However, not only Lu Weiwei, but also young police officers Ding Liang and Huang Zunlong were suffering from nausea symptoms to varying degrees at this moment.

The two of them were in good health, but they couldn't stand how disgusting the corpse was.

Judging from the surface, the body had obviously been lying dormant in the lake for several days, and was covered with water plants and crabs.

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

However, just when everyone was feeling sick, they discovered that only Gu Chen and Officer Wang on the boat had no symptoms.

Especially Gu Chen, he jumped directly into the lake and dragged the body to the splint.

Officer Wang is an old comrade. During his years as a police officer with Zhao Guozhi, he had seen corpses even more mutilated and disgusting than this.

At that time, I got used to vomiting...

So looking at it now, all this is childish. Only a rookie can vomit. Officer Wang cannot afford to shame this person.

Seeing that Ding Liang was no longer suitable to be the "captain", Gu Chen took the initiative to walk up to the bridge and said: "You guys sit back and have a rest, I will sail the ship."

"Okay, I'll leave it to you then." After Ding Liang took over the driving, he staggered back to sit in an empty seat.

Just now he was laughing at Xiaogang for being seasick, but now he was disgusted by the corpse.

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

There was a cool breeze on the lake at night, but the people on the plywood kept smelling the stench of corpses during the entire way back.

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

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

A corpse in such a state of decay must rely on professional testing by a forensic team to confirm and identify the corpse.

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

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

"Hurry up and tie the rope."

"Who is that? Give me a hand and bring up all those who are seasick."

"Where's the water? Get a few bottles of mineral water over here and give them a wash."

Seeing that Gu Chen boarded the pier without any problems, the manager-looking man quickly came over to say hello.

"Comrade police, I didn't know you were visiting late at night, so why did you sail the boat by yourself? If I had known 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 and quickly took out a business card from his pocket and handed it to Gu Chen: "I am the manager of Yangtian Lake Hotel. My name is Xiao Lei. This is my business card."

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

"I know, how could I not know? He is probably hiding from debts."

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

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

"But Liu Biao's roommate Xiaogang told me that Liu Biao had been missing for some time, and before he disappeared, he even wore shoes when sleeping."

"You have to wear shoes when sleeping?" Xiao Lei frowned slightly when he heard this: "This... I have never heard of this, but Liu Biao often causes trouble, and there are probably many people who find trouble for him. We feel

He should have gone away to hide from debts."

"What about this corpse?" Gu Chen stepped aside and pointed at the corpse on the speedboat's plywood.

"Corpse?" Xiao Lei was stunned, then hurried to the dock and glanced at the speedboat's plywood.

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

"What the hell is this? Why is there a corpse? This corpse... why is this corpse so mutilated?"

"Corpse?"

The people who had been watching and joining in the fun now focused their attention on the speedboat's plywood for the first time.

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

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

At this moment, Gu Chen called Xiao Gang and Xiao Lei together, pointed at the mutilated body on the plywood and said, "Look carefully at the clothes and other features of this man. Can you tell who he is?"

?”

"Yes...it's Liu Biao." Xiaogang's face was pale, but he was very sure: "I recognize that dress. It was indeed the one Liu Biao wore the night he disappeared."

"Are you sure?" Officer Wang stepped forward quickly.

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

After the words fell, the scene suddenly became quiet.

Everyone stood there stunned.

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

If we follow the known clues, we can basically conclude that Liu Biao, who even wore shoes when sleeping, seemed to be chased that night.

Then he broke the window and escaped, driving the boat into the lake?

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

But Gu Chen also had another theory, that is, after Liu Biao was killed, his boat was abandoned in the lake, and then the murderer destroyed the boat, creating the illusion that Liu Biao's boat crashed.

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

"Junior Brother Gu." Lu Weiwei, who had recovered somewhat, took the initiative to step forward and asked: "How to dispose of the body?"

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

Obviously, it is impossible for one person to carry the body to the shore without damaging it twice.

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

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

"I won't go, it's too disgusting."

"That's right, my head is gone. This is so fucking scary."

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

"Hey!"

Seeing his men retreating one by one, Xiao Lei was furious and urged: "If you can't handle such a thing, what's the use of you guys? All the old men are just like girls.

"

"manager."

Seeing Xiao Lei's arrogance, a tall and thin male waiter said: "Since you are a big man, then go and help the police comrades carry the body."

"Yes, you go ahead."

"Manager, please take the lead and take the lead."

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

Just when he was about to use the excuse that he sprained his waist, Gu Chen put his arm on Xiao Lei's shoulder.

"Manager Xiao, it seems I can only trouble you to put this 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 his words, Officer Wang rushed to the scene and pushed Xiao Lei to the side of the boat.

Seeing that Gu Chen and Officer Wang had already boarded the ship, and the subordinates behind were staring at him, Xiao Lei felt a little bit stuck, so he could only bite the bullet and agreed:

"Okay, okay, I'll help you, it's just a corpse, what's the big deal?"

five minutes later……

When the body was laid flat on the stone bricks of the dock, Xiao Lei squatted aside and almost collapsed from vomiting.

"Are you okay, Manager Xiao?" Gu Chen turned to ask Xiao Lei, who was exhausted behind him, after cleaning some water plants from the body.

"Carry it... you can bear it, don't have any problems, vomit..."

As soon as he finished speaking, Xiao Lei vomited again, and a sour smell instantly filled the air.

Everyone on the roadside pinched their noses and retreated, feeling that they should keep their distance from Xiao Lei.

Officer Wang walked up to Gu Chen, pointed at the headless body and said, "Liu Biao was really unlucky. He didn't even have a body after his death. What kind of things are there in Yangtian Lake? Are they man-eating devils?"

"Maybe the blood on Liu Biao's body caused his bad luck. It's possible that he was killed and then thrown into the water. But now there is no trace of his head, and the body is gradually decaying. If you want to know the answer, you can only

Ability to perform diatom testing.

"Diatom test?" When Lu Weiwei heard this, she was also confused and said: "But what is diatom?"

Gu Chen glanced at Lu Weiwei and explained seriously: "Diatom is a collective name for single-celled plants with chromatophores, ranging from small puddles formed by rainwater to large oceans that account for 71% of the earth's surface.

, traces of diatoms can almost be seen, and there are more than 16,000 species of diatoms worldwide."

"So many?" Lu Weiwei looked at the water plants on the corpse and couldn't help but said: "I see, but why do we need to conduct a diatom test?"

"Didn't I just say it? Diatoms are single-celled algae." Gu Chen looked at Lu Weiwei's eager to learn attitude and patiently explained:

"If they are present in the body and are the same diatoms found in the water, then they can tell us whether the deceased entered the water while alive or after death."

"With this test, they can tell us whether he drowned, which is very important for body examinations, especially such mutilated bodies."

Lu Weiwei nodded like a chicken pecking 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, "But Junior Brother Gu has learned a wide range of things."

"It's okay." Gu Chen smiled and said, "The main reason is that the forensic records that Forensic Doctor Liu gave me were of great help."

"This is also a learning process, so I store this knowledge in my memory bank and apply what I have learned."

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

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

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

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

"Take one 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 principles, but I haven't seen the actual operation."

"If you ask me how long a piece of bone is needed for this kind of test, I don't know. And if I were to do it, I would be worried that I would cut too much or too little bone."

"What's there to worry about?" Officer Wang, who was standing aside, couldn't help complaining: "I'll tell you what to do. Anyway, there's 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."

"Do you think we sell meat, Lao Wang? This must be extracted scientifically, okay? We must be rigorous and don't talk nonsense if you don't understand." Lu Weiwei hated Officer Wang's nonsense.

I feel like Officer Wang is pretending to understand.

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

Lao Wang is doing well, his mouth is full of fragrance.

Officer Wang said nonchalantly: "Actually, they are almost the same, but you take the problem too seriously."

Several people had some minor disputes while discussing the process of extracting 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 photos to collect evidence.

Although several pictures of the scene were taken on the boat, the lighting was not good at the time and the water and plants were entangled, making it difficult to see clearly the specific condition of the body.

However, Lu Weiwei took the opportunity to take many photos of Gu Chen wearing only his underpants.

This chapter is not over yet, please click on the next page to continue reading! When we arrived at the shore, under the illumination of the street lights, the details of the corpse were 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 so bad. The only thing that can make you speak again is diatom detection technology."

"Diatom testing, is this reliable?" Ding Liang, with the help of Huang Zunlong, washed his hands with mineral water and then came over and asked.

Gu Chen nodded slightly: "With a corpse in the water, especially a highly decomposed corpse, how can you tell whether the deceased drowned or was thrown into the water after death? Where did it enter the water?"

"In fact, scientific research teams have been studying these detection technologies for a long time."

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

Seeing everyone's serious expressions, Gu Chen took advantage of the situation and explained the situation clearly to everyone.

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

"And a few years earlier, this same 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 make corpses 'talk'. It can be said to be a remarkable technological progress."

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

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

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

"So if you go to the Criminal Division of Yangcheng City, you will find that their walls are covered with banners from public security agencies across the country."

"And these banners were specially sent by the institute's forensic scientists after they used diatom testing technology to help them solve the problems they encountered during the investigation."

Huang Zunlong, who took off his gloves, heard the words and said thoughtfully: "Is this technology really so powerful? Then if the body is found in the lake and the body has completely decomposed into bones, how do you detect this situation?"

"Then it definitely can't be tested, right? It's all broken into bones? How can we test it?" Lu Weiwei also had the same question after hearing this.

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

After a few seconds, Gu Chen said calmly: "Actually, there was such a case in May 4 years ago."

"It was a male corpse that was found in a pond in a deep mountain in Hubei Province. And as Huang Zunlong said, the corpse had completely decomposed into white bones."

"Later, after DNA comparison, it was found that the man was a beekeeper. He set out to collect honey in the mountains that year and then disappeared."

"But when the missing person is found, everyone is faced with a skeleton."

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

Gu Chen smiled calmly: "Of course, let the forensic doctors from Yangcheng City Criminal Division handle the matter. After all, they are professional in this area."

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

"So in this case, it would be completely impossible to detect it using traditional diatom inspection techniques."

"So?" Ding Liang asked.

"So? So the Yangcheng City Criminal Science Institute used their innovative diatom detection technology and finally succeeded in detecting the presence of diatoms in the bone marrow of corpse bones."

"And after comparison, this is consistent with the diatoms found in the pond where the body was found, so it can be determined that the person drowned."

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

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

"Is it forensic doctor Liu?" Gu Chen shouted loudly.

Soon, Forensic Doctor Liu's response came from the other side: "Yes, it's me."

"Gu Chen, when I got a call late at night, I knew it was you three groups who were looking for me." Another figure next to Forensic Doctor Liu, Gu Chen heard the complaint of Forensic Assistant Gao Chuanfeng.

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