"Senior Brother Gu. Lu Weiwei looked at his feet and reminded him intentionally.

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

At this time, Lu Weiwei also hurried to his side, and the object in Gu Chen's hand was a thermometer, which made both of them very curious.

Gu Chen looked through the contents of his wallet while looking for other clues.

In the black wallet, in addition to some cash and bills, this thermometer 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 wasn't the cash in the wallet taken away?" Could it be that the murderer accidentally left it behind in the process of carrying the corpse?"

"I guess that's the case. Lu Weiwei said, then took the thermometer from Gu Chen's hand and took it in front of him to observe it.

If you want to talk about the profession of a doctor, it is normal to carry a thermometer with you to measure the patient's temperature.

However, it is rare to keep a thermometer in his wallet, which shows that Dr. Liu usually has a small habit of carrying a thermometer with him.

Lu Weiwei was holding a thermometer and was about to shake it casually, but at this moment, Gu Chen's eyes suddenly froze, and he intercepted Lu Weiwei's right hand.

"What's wrong?" Lu Weiwei looked at Gu Chen with a curious expression.

"It's a bit of a problem. ”

"Q...... Question?" Lu Weiwei looked at the thermometer in her hand and couldn't help asking, "What's wrong with this thermometer?"

"It's the temperature. Gu Chen said.

Lu Weiwei was stunned for a moment, then her eyebrows frowned slightly, and she began to observe the temperature of the thermometer according to Gu Chen's prompts.

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

"There's something obviously wrong with this thermometer, and you see, it's 43 degrees. ”

"Oh my God, really!" Lu Weiwei frowned, and also saw the current temperature of the thermometer, and the whole person couldn't help but ask: "Isn't the scale of this thermometer going down? Why is it still at 43 degrees?" ”

"Senior Sister Lu, you haven't studied physics, right?" Gu Chen also saw Lu Weiwei asking a question, and couldn't help but tease.

Lu Weiwei blushed and said a little embarrassed: "Maybe I have learned relevant knowledge before, but how many years have passed, where do I remember now." ”

Looking at Gu Chen, Lu Weiwei smiled again and said, "I'm not your Senior Brother Gu, my memory is so good, won't the scale of the thermometer drop? It has remained at 43 degrees for so long." ”

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

"This ...... I also know this, when I was a child, I remember that I also bought one at home, and it was also mentioned in physics class, that the main working substance of the thermometer is indeed mercury, but ......"

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

Before Lu Weiwei could finish speaking, Gu Chen directly helped her answer.

Lu Weiwei was stunned for a moment when she heard this, and asked Gu Chen weakly: "Yes...... Is that so? Not going back?"

"Senior Sister Lu. Gu Chen took the thermometer directly in front of her and said, "You may have forgotten that when the thermometer touches the human body, the mercury in the tube will expand and rise when heated. ”

"When the temperature of the mercury is in equilibrium with the body's body temperature, the mercury stops expanding and reaches a stable temperature. ”

"Yes, that's right. Lu Weiwei nodded silently, and said: "Isn't it always the case to measure body temperature? The body temperature measured is often the highest value of the human body temperature, and I remember that it is sandwiched under the arm." ”

"That's right. Gu Chen showed the scale of the thermometer to Lu Weiwei, and then explained: "But Senior Sister Lu, you may have forgotten that after measuring for a certain period of time, the thermometer is withdrawn from the human body, and the mercury shrinks when it is cold, and the narrow part of the thermometer will automatically disconnect." “

"And the mercury that has risen into the mercury column does not retreat, but stays where it is, so that people can judge the temperature of the human body according to the height of the mercury. ”

"After using the thermometer, you must vigorously shake the thermometer down to make the mercury in the mercury column slide into the vacuole, so as not to affect the next use. ”

Under Gu Chen's words, Lu Weiwei nodded frequently like a primary school student listening to the lecture.

"I know, Senior Brother Gu, what do you mean that if you don't shake the thermometer vigorously, the temperature in the thermometer will always maintain the temperature at the time of the last measurement, right?"

Gu Chen nodded: "That's what it means." ”

"But. Lu Weiwei looked at the exaggerated number of 43 degrees on the thermometer, and couldn't help but teasing: "But Senior Brother Gu, have you ever thought about who can have a high fever of 43 degrees and still live well? Could it be the old lady who saw Dr. Liu for the last time?"

"If that's the case, isn't the old lady finished, and will she still be able to live? ”

Of course, Lu Weiwei knows that the normal temperature of the human body is usually around 37 degrees, and a high fever of 40 degrees is already a very fatal thing.

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

Gu Chen thought quietly for a few seconds before saying, "Why don't you ask Officer He and ask him to contact the patient's home to see what the situation was that night and whether the patient had a fever." ”

"I'll see it's okay, then I'll call Lao Wang. Lu Weiwei didn't think much about it, and directly took out the phone and began to contact Officer Wang.

Gu Chen, on the other hand, continued to search around the scene.

It didn't take long for Lu Weiwei to receive a call back from Officer Wang, and after communicating with each other, Lu Weiwei hung up the phone.

"Senior Brother Gu, I have already asked the patient on the other side, and the patient had a small fever that night, almost about 39 degrees, which was measured by Dr. Liu. ”

"Moreover, I also explained the situation on our side to them. ”

Listening to Lu Weiwei's words, Gu Chen felt even more curious, and couldn't help but shake his head.

"No, it's 39 degrees Celsius, why does the thermometer appear 43 degrees?"

"If you look at it normally, after the doctor takes the temperature, he usually shakes it vigorously and keeps the thermometer in its position. ”

But the temperature that Dr. Liu measured for the old lady was 39 degrees, and this was the last patient Dr. Liu ever seen, after which Dr. Liu disappeared. ”

"Yes, the old lady is indeed the last patient Dr. Liu has ever seen. Lu Weiwei also nodded fiercely, and after hesitating for a while, Lu Weiwei asked Gu Chen weakly:

"Senior Brother Gu, will it ...... Dr. Liu went to see the old lady and take her temperature, and then went to help other patients?"

"No, it won't. Gu Chen directly refuted Lu Weiwei's statement: "You think, according to the situation at the time, according to the situation at the time, Dr. Liu did leave directly on a battery car after seeing a doctor." ”

At the same time, within a few minutes, the car passed by the patient's house, and five or six minutes later, the crash occurred. ”

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

"And I have already extracted relevant bloodstains from the scene, as expected, if I take them to the technical department for identification, the bloodstains should be Dr. Liu's. ”

"yes. It was also said by Gu Chen, and Lu Weiwei came back to her senses from the reasoning just now, so she said: "Indeed, if the bloodstains on the road belong to Dr. Liu, it means that Dr. Liu has never seen anyone else since he came out of the patient's house." ”

Therefore, if Dr. Liu measured his body temperature and did not shake the thermometer, the temperature of the thermometer should be 39 degrees, not an exaggerated 43 degrees. ”

Gu Chen nodded: "You're right, so this temperature is definitely abnormal, there should be other reasons." ”

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

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

"What's wrong?" Lu Weiwei couldn't help but ask him when she saw that Gu Chen had been sniffing.

Gu Chen didn't answer, but looked at the black wallet in his hand.

He immediately took the wallet in front of him, and after looking left and right a few times, he found that the corner of the black wallet was obviously burned.

I put it on the tip of my nose and sniffed it, and there was indeed a smell of gasoline.

"That's the smell. Gu Chen was overjoyed, and couldn't help but snap his fingers and said, "I know, I know what the thermometer is all about." ”

I also saw that Gu Chen was overly excited and felt like he had won the lottery, so he hurriedly asked him: "Senior Brother Gu, do you know what's going on?"

"It's fire, it's fire, Senior Sister Lu, I finally know why Gao Chuanfeng and I make mistakes in judgment, and here's why. ”

Gu Chen walked back and forth in front of Lu Weiwei twice, his left wallet and his right hand thermometer, feeling that these two things were the key clues he found.

"It's not that you're waiting. Lu Weiwei was stunned by Gu Chen's words, and quickly scratched her head, and only after calming down did she ask again: "You mean, the corpse was baked by fire, right?"

"Yes, exactly. Gu Chen brought the black wallet to Lu Weiwei: "Senior Sister Lu, look, have you found anything in this location of the black wallet?"

"Uh! It looks like it's burnt, and the leather surface is a little burnt. ”

"Smell it again. Gu Chen brought the black wallet closer.

Lu Weiwei stretched her neck and sniffed: "Huh, why does it smell of gasoline? Has it been baked by gasoline?"

Gu Chen smiled, first packed the money into a forensic bag, and then put the thermometer in another forensic bag, and then asked, "Now you should understand what's going on, right?"

"Got it. Lu Weiwei smiled and said: "The corpse was baked by the murderer with gasoline, so the decomposition speed was accelerated. ”

"This can also explain why Senior Brother Gu and Gao Chuanfeng both judged the time of death of the deceased to be about a week, because you judge according to the normal rate of corpse decay. ”

"That's right, that's why there was a contradiction with the clues that Officer He got at that time. Gu Chen said.

Lu Weiwei smiled and shook her head: "I said, both of you are studying under Forensic Doctor Liu, how can there be such a big mistake?"

"Because the body was deliberately baked by the murderer, the murderer made a beautiful move on the issue of the time of death, in order to cause trouble to the police, so that the police could not find out the time of Dr. Liu's death. ”

The murderer took advantage of this to abandon the baked body of Dr. Liu in the wilderness and separate it from the first scene of the crime. ”

"In this way, it will definitely be more difficult for our police to investigate who the murderer is. ”

"And the temperature of the thermometer is as high as 43 degrees, which can also explain it, because the temperature displayed on the thermometer is not the temperature of the patient at all, but the temperature at which the body has been baked. ”

"Yes. Seeing that Lu Weiwei was able to sort out the doubts of the entire case according to her own guidance at this moment, Gu Chen was very pleased.

But at the same time, Gu Chen has also been able to lock on several characteristics of the murderer.

The murderer must first have been a drunk driver, who was very fond of drinking.

Moreover, after the car accident, it was found that Dr. Liu had died on the spot, and in order to evade responsibility, Dr. Liu's battery car was secretly hidden.

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

From this point of view, the murderer must be a person with a certain level of knowledge, and coupled with the car accident, it is not particularly difficult to sort out the entire clue.

Thinking of this, Gu Chen hurriedly said, "Senior Sister Lu, we should immediately meet with Senior Brother Wang and Senior Brother He, it seems that this murderer should be able to be found." ”

"Then what are you waiting for?" Lu Weiwei couldn't wait now, and immediately responded: "Get in the car, I'll drive this time." ”

It didn't take long for Lu Weiwei to drive back to the scene of the crime just now.

Officer Wang and Officer He were already waiting on the side of the road, and there was an extra police car beside them.

Everyone was talking to each other about the situation, preparing to contact the vehicle and load Dr. Liu's battery car back.

Seeing Gu Chen and Lu Weiwei coming back with clues, Officer Wang hurriedly asked the two about the situation.

Gu Chen also briefly reported the black wallet and thermometer he found around the scene to Officer Wang and Officer He.

Neither of them expected that Gu Chen would be able to 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, so he said a little reluctantly: "Gu Chen, I was wrong before, I shouldn't doubt you, I just felt that the situation you identified at that time was very different from the situation I knew, so I would say a few words." ”

He looked at Officer Wang beside him, and also smiled and said, "Lao Wang knows my temper, I have always said something, and I have a straight temperament." ”

"Sometimes the leaders of the city bureau come down to inspect the inspection work, and if they do something wrong, I will also point it out bluntly. ”

"As for face or something, it all depends on strength, and I recognize strength. ”

Seeing Officer He digging his heart with him, Gu Chen just wanted to speak, but was interrupted by Lu Weiwei's direct interjection.

"Then Senior Brother He, what do you think of my Senior Brother Gu's strength?"

"This ......" Officer He looked at Comrade Lao Wang beside him, and couldn't help but laugh dryly and said: "Of course you have the strength, but if you can help me catch the real murderer, then I, Lao He, really admire you Gu Chen." ”

"Well said. "Gu Chen has always disliked others to be polite to him, and it is his job to arrest the murderer.

But since Officer He said so, he casually agreed.

According to the current clues, the scope can actually be narrowed down a lot, which can be said to be a big step forward compared to the previous clues.

"Senior Brother He, I need the assistance of your colleagues at the police station. Gu Chen said.

Officer He smiled: "Of course, you say, how can we help you?"

"First. Gu Chen turned around and said lightly: "It is to investigate the vehicle involved, although there is no monitoring at 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 intersections to the location of the crime based on 0:03 at that time. ”

"Circle the time frame, look for the vehicles that passed during this period, and find all the vehicles that could have caused the accident. ”

"This is no problem, on this road, there are still some sections of the road that are monitored, and with the time of the crime, we can do it. Officer He said.

"Good. Gu Chen nodded, and said: "In addition, among the drivers of these vehicles that may be causing the accident, find a person with a higher level of education, and this person should be particularly fond of drinking, and those with a history of drunk driving should pay special attention." ”

Officer He took a small notebook and remembered that he didn't win, so he hurriedly said: "Gu Chen, you said to be slow, that is, to find the kind of driver who likes to drink and has a history of drinking, and has a high level of education, right?"

"Yes, these characteristics are indispensable, and if not, then find the closest one of these drivers. Gu Chen said.

Officer He nodded: "I understand, I'll let someone do this immediately, so what?"

Also, ask at a nearby gas station to see if anyone has been buying gasoline frequently lately. ”

"Attention, it's the kind that obviously has gas in the car, but there is another purchase, focus on investigating. ”

"The time went from after the wee hours of the morning two days ago to before the body was found today. ”

"Good. After taking the small notebook and recording it completely, Officer He immediately said: "Okay, I will order me to go down now, let the brothers check it carefully according to the information you provided, and I will notify you immediately when I get the news." ”

"Yes. Gu Chen was not worried about Officer He's efficiency.

Because this man's character is also vigorous and resolute.

Except for a more stinky temper and a straighter speech, everything else is fine.

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

Hanging up the phone, Officer He said to Gu Chen with a smile: "Otherwise, let's go to the restaurant next to our police station for dinner at noon, the investigation will take some time, we will wait while eating, what do you think?"

Lu Weiwei touched her rumbling stomach and said with a smile: "Senior Brother He, what you said is too timely. ”

"Haha, that's it?" Officer He said.

"It's settled. Officer Wang and Gu Chen spoke in unison.