Chapter 531

"Brother Gu." Lu Weiwei looks at his feet, intentionally reminds.

"Yes." Gu Chen nodded and knew that something had fallen off just now, so he squatted down and picked up the objects on the ground.

At this time, Lu Weiwei also rushed to him. Gu Chen's object was a thermometer, which made both of them very curious.

Gu Chen looks through the contents of his wallet and looks for other clues.

In the black wallet, in addition to some cash and receipts, this thermometer has aroused Gu Chen's curiosity.

"This thermometer It's rare that Dr. Liu carried it with him? " Asked Lu Weiwei.

Gu Chen nodded slightly: "almost, but why hasn't the cash in the wallet been taken away? Is it the murderer who accidentally left the body in the process of carrying it? "

"I guess so." Lu Weiwei said, then took the thermometer from Gu Chen's hand and observed it in front of her.

It's normal for doctors to carry a thermometer with them, which is convenient to measure the patient's temperature.

However, it is very rare to put the thermometer in his wallet. It can be seen that Dr. Liu usually has a small habit of carrying a thermometer with him.

Lu Weiwei is holding a thermometer. She is about to swing it. But at this moment, Gu Chen suddenly stares and stops Lu Weiwei's right hand.

"What's the matter?" Lu Weiwei looks at Gu Chen curiously.

"There's a problem."

"Ask Questions? " Looking at the thermometer in her hand, Lu Weiwei asked, "what's wrong with this thermometer?"

"It's the temperature." Gu Chen said.

Lu Weiwei stayed for a while, and then she frowned and began to observe the temperature of the thermometer according to Gu Chen's suggestion.

Gu Chen took the thermometer from Lu Weiwei's hand, observed it closely in his hand, and then directly reported the temperature of the thermometer at the moment.

"This thermometer is obviously abnormal. You see, its temperature is 43 degrees."

"My God, really!" Lu Weiwei frowned and saw the current temperature of the thermometer. The whole person could not help but ask: "will the scale of this thermometer not drop? How to keep it at 43 degrees. "

"Sister Lu, you didn't learn physics well?" Gu Chen also met Lu Weiwei to ask questions, but he couldn't help teasing.

Lu Weiwei red face, some embarrassed way: "may have learned relevant knowledge before, but how many years have passed, where do I still remember now."

After looking at Gu Chen, Lu Weiwei said with a smile: "I'm not your brother Gu. I have such a good memory. Can't the scale of the thermometer go down? It's still 43 degrees for such a long time. "

"Because the main working substance of the thermometer is mercury." Gu Chen said.

"This I also know that. When I was a child, I remember that I bought one in my family, and I also talked about it in physics class. The main working substance of thermometer is mercury, but... "

"But when the thermometer leaves the body, mercury records the highest temperature ever measured and does not return to the bottom of the tube."

Without waiting for Lu Weiwei to finish speaking, Gu Chen answers directly for her.

Lu Weiwei was stunned and asked Gu Chen: "yes Is that the case? Not coming back? "

"Sister Lu." Gu Chen held the thermometer directly in front of her and said, "you may forget that when the thermometer contacts the human body, the mercury in the tube will expand and rise when heated."

"And when the temperature of mercury is in balance with the body temperature, Mercury will stop expanding and reach a stable temperature."

"Yes, it is." Lu Weiwei nodded silently, and then said, "isn't it all like this to measure body temperature? The measured body temperature is often the highest value of human body temperature, which I remember is under the arm

"That's right." Gu Chen showed Lu Weiwei the scale of the thermometer, and then explained, "but elder sister Lu, you may have forgotten that after measuring for a certain period of time, pull the thermometer away from the human body, and the Mercury will contract when it is cold, and the narrow part of the thermometer will automatically disconnect. "

" but the mercury that has risen to the mercury column will not retreat, but stay in place, so that people can judge the temperature of human body according to the height of mercury. "

"After using the thermometer, it is necessary to swing the thermometer downward vigorously to make the mercury in the mercury column slide into the vacuole, so as not to affect the next use."

Lu Weiwei in Gu Chen's words, seriously like a listening pupil, nodded frequently.

"I know, Mr. Gu. Do you mean that if you don't swing the thermometer vigorously, the temperature in the thermometer will always keep the temperature when it was last measured, right?" Asked Lu Weiwei.

Gu Chen nodded: "that's what it means."

"But." Looking at the exaggerated figure of 43 degrees on the thermometer, Lu Weiwei couldn't help joking and saying, "but brother Gu, have you ever thought about who can have a high fever of 43 degrees and still live well? Is it the old lady that Dr. Liu visited for the last time

"If that's the case, isn't the old lady finished the calf and she can still live? It's a terrible feverOf course, Lu Weiwei knows that the normal temperature of the human body is usually about 37 degrees, and a high fever of 40 degrees is a very fatal thing.

Can you have a high fever of 43 degrees? Lu Weiwei has never seen such a person.

After a few seconds of quiet thinking, Gu Chen said, "why don't you ask officer he to contact the patient's home to see what the situation was that night and whether the patient had a fever."

"I think so. I'll call Lao Wang." Lu Weiwei also did not think much, directly took out the phone and began to contact police officer Wang.

Gu Chen continued to search around the scene.

Before long, Lu Weiwei received a call from police officer Wang. After communicating with each other, she hung up.

"Mr. Gu has already inquired with the patient. The patient had a slight fever that night. It was about 39 degrees, which was measured by Dr. Liu."

"What's more, I've explained our situation to them

Listening to Lu Weiwei's words, Gu Chen is more curious and shakes his head.

"No, it's 39 degrees. Why does the thermometer show 43 degrees?"

"Under normal conditions, doctors usually shake the thermometer vigorously after taking the temperature, and keep the thermometer in its home position."

"But the temperature that Dr. Liu measured for the old lady was 39 degrees, and this was the last patient that Dr. Liu had seen. After that, Dr. Liu disappeared."

"Yes, the old lady is indeed the last patient Dr. Liu has ever seen." Lu Weiwei also nods hard. After hesitation, Lu Weiwei asks Gu Chen weakly:

"brother Gu, will you After seeing the old lady and measuring her temperature, Dr. Liu went to see other patients again? "

"No way." Gu Chen directly refuted Lu Weiwei's words: "you think ah, according to the situation at that time, Dr. Liu did ride the battery car directly after seeing the doctor."

"At the same time, within a few minutes, the car passed the patient's home, and five or six minutes later, the accident happened."

"From the bloodstains we found at the scene just now, as well as the battery car, we can conclude that this accident is inevitable."

"And I have extracted the relevant bloodstains from the scene. As expected, I will take them to the technical department for identification. That bloodstain should be Dr. Liu's right."

"Yes." It is also said by Gu Chen that Lu Weiwei had recovered from her reasoning just now, and then she said, "indeed, if the blood on the road is Dr. Liu's, it means that Dr. Liu has never seen anyone else since he came out of the patient's home."

"So if Dr. Liu didn't throw the thermometer, the thermometer should be 39 degrees, not an exaggerated 43 degrees."

Gu Chen nodded: "you are right, so this temperature is absolutely abnormal, there should be other reasons."

Thinking of this, Gu Chen suddenly smelled a faint smell of gasoline.

At first it didn't seem that there was much reaction, but now I feel more and more that the smell of gasoline is around.

"What's the matter?" Lu Weiwei see Gu Chen has been sniffing, can not help but ask him.

Gu Chen did not answer, but looked at the black purse in his hand.

He immediately took the wallet in front of him. After looking around for several times, he found that the corner of the black wallet was obviously scorched.

I smell it on the tip of my nose, and I really have a smell of gasoline.

"That's the taste." Gu Chen was overjoyed. He could not help but take a note and ring his finger: "I know. I know what happened to the thermometer."

Also see Gu Chen over excited, feel like winning the lottery, so quickly asked him: "Gu younger brother, do you know what is going on?"

"It's fire. It's fire. Elder martial sister Lu, I finally know why Gao Chuanfeng and I both make mistakes in judgment. That's why."

Gu Chen walked back and forth in front of Lu Weiwei for two times, left hand purse and right hand thermometer. Feeling these two things were the key clues he found.

"It's not you. Wait a minute." Lu Weiwei was confused by Gu Chen, and quickly scratched her head. After calming down, she asked again, "you mean, the body was roasted by fire, right?"

"Yes, that's it." Gu Chen took the black wallet to Lu Weiwei and said, "sister Lu, do you have any findings about the location of the black wallet?"

"Eh! It seems to be scorched. The leather surface is a little burnt

"Smell it again." Gu Chen draws the black purse closer.

Lu Weiwei craned her neck and sniffed: "eh? How does it smell like gasoline? Have you ever been baked in gasoline? "

Gu Chen smiles. First, he packs the money into a forensics bag, and then puts the thermometer in another forensics bag. Then he asks, "now you should understand what's going on?"

"I see." Lu Weiwei said with a smile: "the body was roasted by the murderer with gasoline, so it accelerated the rate of decay."

"This can also explain why younger martial brother Gu and Gao Chuanfeng judge the time of death of the dead for about a week, because you judge according to the normal rate of decay.""That's right. That's why it contradicted the clues that officer he got." Gu Chen said.

Lu Weiwei laughs and shakes her head: "I say, you both learn from forensic Liu, how can you make such a big mistake?"

"Because the body was deliberately roasted by the murderer, on the issue of the time of death, the murderer moved a beautiful hand and foot, in order to cause trouble to the police, so that the police can not find out the time of death of Dr. Liu."

"And the murderer took advantage of this to discard the roasted body of Dr. Liu in the wild and separate it from the first scene of the crime."

"In this way, it will be more difficult for the police to find out who the killer is."

"The temperature of the thermometer is as high as 43 degrees, which can be explained, because the temperature displayed on the thermometer is not the temperature of the patient at all, but the temperature of the body being baked."

"Yes." Gu Chen is very pleased to see that Lu Weiwei has been able to sort out the doubts of the whole case according to her own guidance.

But at the same time, Gu Chen has been able to identify several characteristics of the killer.

First of all, the killer must be a drunk driver. He likes drinking very much.

Moreover, after the accident, Dr. Liu was found dead on the spot. In order to evade his responsibility, he secretly hid his battery car.

After that, the corpse of Dr. Liu was roasted with gasoline to speed up the decay of Dr. Liu's body.

In this way, the killer must be a person with a certain level of knowledge. Coupled with the accident, it is not particularly difficult to sort out the whole clue.

Thinking of this, Gu Chen quickly said: "elder martial sister Lu, we should meet with senior brother Wang and elder martial brother he right now. It seems that this murderer can be found."

"What are you waiting for?" Lu Weiwei also can't wait now, immediately responded: "get in the car, this time I'll drive."

Before long, Lu Weiwei drove back to the crime scene.

Police officer Wang and officer he have been waiting on the side of the road, and there is a police car beside them.

We are talking to each other about the situation, ready to contact the vehicle, will Dr. Liu's battery car back.

Also see Gu Chen and Lu Weiwei back with clues, officer Wang quickly with the two people to ask about the relevant situation.

Gu Chen also gave a brief report to police officer Wang and he about the black wallet and thermometer he found around the scene.

Both of them did not expect that Gu Chen could find such a key clue around the scene where the body was found.

Officer he thought that he had wrongly blamed Gu Chen and Gao Chuanfeng before, and he was a bit reluctant to say: "Gu Chen, before I was wrong, I shouldn't suspect you. I just feel that the situation you identified at that time is quite different from what I have mastered. This will say a few words."

He looked at the officer Wang around him, but also with a smile and said, "Lao Wang knows my temper. I've always said what I have. I'm straight."

"Sometimes the leaders of the Municipal Bureau come to inspect the work. If they do something wrong, I will point it out."

"As for face, it's all about strength. I'm the one who recognizes strength."

Also see he police officer with their own heart out of the nest, Gu Chen just want to open the mouth, but was interrupted by Lu Weiwei directly.

"What do you think of my brother Gu's strength

"This..." Officer he looked at Comrade Wang around him and said with a dry smile: "of course, there is strength, but if you can help me catch the real murderer, I really admire you Gu Chen."

"Good to say." Gu Chen doesn't like to be polite to himself. It's his job to arrest the murderer.

However, since he said so, he readily agreed.

According to the current clues, the scope of the search can be narrowed down a lot, which is a big step forward compared with the previous no clues.

"Senior brother he, I need the help of your colleagues in the police station." Gu Chen said.

Police officer he smiles: "of course, you say, how can we help you?"

"First." Gu Chen turned around and said faintly: "it is to investigate the vehicles involved. Although there is no monitoring on the first scene, senior brother he also said that this road is not the main road, it is relatively simple."

"Then we can calculate the time from the monitored intersection to the crime site according to 0.03 minutes at that time."

"Circle the time frame, look for the vehicles that pass during this period, and find all the vehicles that may cause accidents."

"This is no problem. Some sections of the road are monitored. With the time of the crime, we can do it." He said.

"Good." Gu Chen nodded and said: "in addition, among the drivers who may have been involved in the accident, find a person with a higher education level, and this person should especially like to drink, and those who have a record of drinking and driving should pay special attention to it."

Police officer he didn't win much with his small notebook. He quickly said, "Gu Chen, if you say slow down, you can find a driver who likes to drink and has a drinking record, and has a higher education level, right?""Yes, one of these characteristics is indispensable. If not, find the closest one among these drivers." Gu Chen said.

Officer he nodded: "I see. I'll let people do it right away. What else is there?"

"Also, go to a nearby gas station and find out who has bought gasoline frequently recently."

"Pay attention. It's the kind of car that has oil, but you buy it separately. Focus on investigation."

"It's from the early hours of the morning two days ago to today before the body is found."

"Good." After taking the small book and recording it completely, officer he immediately said, "well, I'll tell you to go down now and let the brothers check it carefully according to the information you provide. I'll inform you immediately when I get the information."

"Yes." Gu Chen is not worried about police officer he's efficiency.

Because this person's character is also vigorous.

In addition to bad temper, speak straight, everything else is OK.

Officer he also took out his mobile phone and started to contact his colleagues on duty in the police station. He asked the other party to record the clues provided by Gu Chen one by one, and then asked everyone to search.

After hanging up the phone, officer he said to Gu Chen with a smile: "how about this? We'll have dinner at the restaurant next to the police station at noon. The investigation will take some time. We'll wait while we eat. What do you think?"

Lu Weiwei touched her stomach and said with a smile, "elder martial brother he, this is too timely."

"Ha ha, that's settled?" He said.

"It's settled." Officer Wang and Gu Chen agreed.

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