Rogue Aventure

Yang Luo stood there looking down, there was no scar on the surface.Then he squatted down slowly. Since Li Zuoqun was lying on his side, his upper body, chest and face were almost on the ground, and the wound could not be seen. However, based on his experience, Li Zuoqun's heart should have been pierced by a sharp weapon, or It was the main artery in the throat that was cut open, otherwise so much blood wouldn't have flowed out from the ground.

Huang Pingyi and Zheng Damin hurried over when they saw Yang Luo inspecting the corpse.

Zheng Damin asked: "Secretary Yang, did you see anything?"

Zheng Damin had heard about Liu Hai's death case, especially the professional knowledge contest between Yang Luo and Sun Yunfeng.Later, he also personally checked Liu Hai's body, and he didn't see the symptoms Yang Luo mentioned.While waiting for the results of the forensic autopsy, He Dabao suddenly surrendered, letting the truth come to light, which made Zheng Damin admire Yang Luo from the bottom of his heart.

He is the director of the County Public Security Bureau, and Yang Luo used to be the director of the County Public Security Bureau. In terms of professional knowledge and super logical reasoning ability, it is really a world of difference.So seeing Yang Luo inspecting Li Zuoqun's body, he hurried over to ask.After all, Li Zuoqun was the secretary of the county party committee. If he died suddenly, whether it was a murder or an accident, as long as the cause of death was not investigated for a day, he would be under great pressure.

Yang Luo didn't answer him, but touched the blood on the ground with his fingers.

"Looking at the degree of blood clotting, death should be between one and two hours." After speaking, he picked up the Coke in Li Zuoqun's hand, then shook it, and poured it out a little, but there were still ice particles.

At this moment, the criminal police who were inspecting the scene also surrounded him. A middle-aged man who was nearly 40 years old and held the rank of third-level police inspector looked at Zheng Damin suspiciously.

"Director, this is..."

Zheng Damin raised his fingers and hissed, and the middle-aged man closed his mouth.

Yang Luo was distracted with the Coke, put the Coke back to its original position, stood up and said, "Director Zheng, have you checked the wound on the corpse?"

Zheng Damin nodded: "The wound is in the throat, it seems that some sharp object has been pierced through the main artery."

Yang Luo nodded, squatted down again, and turned Li Zuoqun's body over, only to see a deep penetrating wound more than an inch wide in Li Zuoqun's throat.Then he picked up Li Zuoqun's other hand to check, and stood up again after coming over for a while.

"Did you find anything?" Yang Luo looked at Zheng Damin and the middle-aged man.

The middle-aged man asked, "What do you mean?"

Yang Luo said softly, "One pull ring."

The middle-aged man was taken aback: "I didn't see it."

Yang Luo pouted, and walked to the refrigerator, opened the refrigerator, there were some vegetables in the refrigerator, and nothing else.Yang Luo opened the freezer again, only to find a can of Coke still frozen inside.I took it out and squeezed it with my hands. It was as hard as a rock, obviously frozen solid.

Yang Luo threw the Coke back and closed the refrigerator door, and looked down at the floor next to the refrigerator. There was still a box of Coke, but it was not a can, but a plastic bottle.

Yang Luo lifted the Coke box with his feet, then looked up at the woman who was still crying.

"Are you Secretary Li's wife?"

The woman sobbed and said, "My name is Tang Huizhen."

Yang Luo asked without any expression on his face: "When did you find out that Secretary Li had an accident, and where were you at that time?"

Tang Huizhen said: "I went out to buy vegetables at four o'clock. When I came back more than an hour ago, I saw something happened to Lao Li, and then I called the police."

Yang Luo asked: "Secretary Li likes to drink Coke? And is it iced?"

Tang Huizhen nodded: "Lao Li said that drinking Coke can refresh you, especially iced Coke."

Yang Luo didn't ask any more questions, but looked at Zheng Damin: "Have you notified the forensic doctor?"

Zheng Damin said: "Notified." After speaking, he looked at his watch, "It should be here soon."

Yang Luo took out a cigarette and lit one, took a deep breath and said, "Wait a while!"

Huang Pingyi asked, "What did you see?"

Yang Luo smiled slightly: "Let's talk about it when the forensic doctor comes over."

Huang Xinxin couldn't help but said: "Boss, I can tell by your expression, you must have found something, tell me quickly."

Yang Luo shook his head: "I'm not sure, I'd better wait for the forensic doctor to come."

Although everyone present wanted to know what Yang Luo had discovered, there was nothing he could do if he didn't tell.

Zheng Damin asked, "Captain Han, do you have any clues?"

Han Gengqiang said, "No!"

At this time, two women in white coats came in from the outside. The older one was in her 30s and the younger one was 25 or [-] years old. They were still carrying a metal box.

Seeing the woman, Zheng Damin hurriedly said, "Xiao Liang, you're here."

Liang Minjia nodded expressionlessly, came to Li Zuoqun's body and squatted down, and checked Li Zuoqun's body.

"Except for the throat, there is no obvious trauma." After speaking, he raised his hand, "Ni Ni, give me the evidence collection box."

The girl standing next to her lowered the metal box to the ground and opened it.

Liang Minjia put on gloves, took out a scalpel, and cut open the wound on Li Zuoqun's throat, only to see a shiny metal object exposed.

Liang Minjia took the tweezers again, and pulled out the metal object, which turned out to be the tab of a can of Coke.Everyone was stunned when they saw it, and then looked at Yang Luo in unison.Just now Yang Luo kept looking at the Coke in Li Zuoqun's hand, and asked the middle-aged man if he found a pull ring.It seems that he has known for a long time that the wound on Li Zuoqun's throat was caused by a pull ring.But how is this possible? How could a pull ring kill Li Zuoqun.

"How could this be?" Liang Minjia looked at the tab on the tweezers and muttered softly.

Yang Luo glanced at the bloody ring, greeted Huang Xinxin, and walked out.

Zheng Damin was anxious: "Secretary Yang!"

Yang Luo stopped in his tracks: "Is there something wrong?"

Zheng Damin said awkwardly: "Secretary Yang, you should know what's going on."

Yang Luo nodded: "Yes, but so what? Investigating the cause of Secretary Li's death is the business of your police, and it doesn't seem to have anything to do with me."

Zheng Damin was even more embarrassed, and cursed in his heart: "Damn, if I knew how that tab got into Li Zuoqun's neck, why would I ask you?"

Huang Pingyi said helplessly: "Tell me, what are the conditions." If the cause of Li Zuoqun's death is not clarified, his life as the county magistrate will not be easy.

Yang Luo grinned when he heard Huang Pingyi's words: "Secretary Li had an accident, but some things cannot end because of the death of some people."

Huang Pingyi's face was full of black lines. He understood the meaning of Yang Luo's words. Li Zuoqun was dead, and the higher-ups would definitely put aside the investigation of Li Zuoqun.And Yang Luo didn't want to let Li Zuoqun go just because he died, but asked the higher-ups to investigate.But this kid didn't want to quarrel with the higher-ups because of the investigation of Li Zuoqun, but asked him to come forward.

Huang Pingyi gritted his teeth and said, "If the city really stops the investigation, I will write a report and submit it, but if the city doesn't agree, then there is nothing I can do."

Yang Luo smiled: "You are the county magistrate, as long as you submit your application, I think the city will definitely consider your opinion, and then I will work harder, and this matter will continue."

Huang Pingyi gritted his teeth with hatred, and cursed secretly, this little fox is really cunning, and actually dragged him into the water.

Yang Luo didn't look at Huang Pingyi's eyes that could kill him, but glanced around: "Aren't you surprised that a pull ring got into Secretary Li's neck?"

Everyone nodded in unison, even Liang Minjia nodded hurriedly.She has been working as a forensic doctor for seven or eight years, and she has never encountered such a bizarre thing.In fact, it's not just him, Zheng Damin has never met him before.

Yang Luo said: "Then I will teach you a lesson." After speaking, he took a puff of cigarette, "Water below 4 degrees Celsius, the lower the temperature, the larger the volume, and the drastic change in the volume of Coca-Cola is in the process of freezing. Because The density of ice is 0gcm³, and water is 917gcm³;, so the volume expands about 3% after freezing. Although cola is not pure water, it will not differ too much from this figure.

The freezing point of pure water at standard atmospheric pressure is 0 degrees Celsius.When various solutes are dissolved in water, the freezing point is lowered.The freezing point of Coke is about 30 degrees Fahrenheit (about -1 degrees Celsius).This is Coke after opening the can. Due to the high internal pressure of the sealed can, the freezing point of Coke will be lowered.However, the freezing point depression due to the pressure change is not significant.

There is also a change in carbon dioxide gas, which is dissolved in cola.Therefore, the internal pressure of an unopened can of Coke is higher than atmospheric pressure.The internal pressure of canned Coke is 4 kPa at 117 degrees Celsius and 21 kPa at around 248 degrees Celsius. 24 kPa at 380°C.By comparison, atmospheric pressure is 101 kilopascals.That is to say, the pressure of refrigerated cola is slightly higher than the atmospheric pressure, and it is about 2-4 times the atmospheric pressure at room temperature.

Therefore, the solubility of carbon dioxide in water is that the lower the temperature, the higher the solubility.Cooling will promote the dissolution of carbon dioxide and reduce the pressure in the tank.

But after the cola starts to freeze, a lot of carbon dioxide is released.Because the gas will not dissolve in the ice cube.This released carbon dioxide greatly increases the pressure in the tank.According to Boyle's law, the pressure of a gas is inversely proportional to its volume at the same mass and temperature.Canned cola generally has 355-3 times the volume of carbon dioxide dissolved in 3ml, that is to say, the volume of these carbon dioxide at standard atmospheric pressure is about 7L.When they are released in a closed jar, since most of the volume in the jar has been occupied by ice cubes, the volume of the gas is compressed very small at this time, and the pressure will naturally be very high.The specific size is related to complex factors such as the deformation of the can and the freezing of Coke, so it cannot be estimated.

These gases are compressed to 5% of the standard atmospheric pressure, that is, 1l of gas is compressed into 50ml. Considering the volume of the tank and the internal freezing, their pressure at this time is the standard atmospheric pressure.

Coke cans are designed to withstand 100psi, which is 689 kilopascals, which is close to 5 atmospheres of pressure.Coke stored under normal conditions usually has only two or three atmospheres of pressure inside, so this strength is enough for normal use.But in the extreme case of freezing, a frozen can of Coke is indistinguishable from a bomb. "

Speaking of this, Yang Luo took a last puff of cigarette, and then threw the cigarette butt on the ground: "Look at the Coke can in Secretary Li's hand, it has been deformed, and the bottom is even more protruding. It can be seen that the pressure of this can of Coke has exceeded So when Secretary Li touched a tab, the tab was ejected by the powerful air pressure, and by coincidence, it just shot into Secretary Li's throat."

The inspector said, "In other words, Secretary Li died accidentally?"

Yang Luo smiled slightly, and walked outside: "Whether it was an accident or not, you can only find out if you investigate deeply. Don't jump to conclusions too early."