Listening to my question, Mu Zihan just smiled, but did not answer directly, but turned to ask the attending doctor and said, "Hello, may I ask if you have a nurse named Tang Xin?" ”

Mu Zihan's abrupt question was beyond all of our expectations, although after thinking about it, I vaguely thought that maybe Mu Zihan was suspecting that the murderer in this case was Tang Xin. Pen × fun × Pavilion www. ｂｉｑｕｇｅ。 infoIt's just that now he hasn't even explained why it's a homicide, so why did he suddenly ask Tang Xin about it?

However, after being stunned for a moment, the doctor still replied truthfully: "That's right, there is a nurse named Tang Xin in our department?" Is Detective Mu looking for her? It's a pity that she seems to be on a shift today, so she shouldn't be in the hospital. ”

"Well, that's not a coincidence." Mu Zihan smiled meaningfully and said, "Okay, then let's get down to business." First of all, the reason why I say this is a homicide is because of the eyes of the deceased. ”

As he spoke, he walked to Ma Lijun's corpse, pointed to the corpse's empty eyes and said, "I also said before that when Ma Lijun's family found him, it was not because they didn't want to help him close his eyes and let him die blindly, but because he couldn't close them at all for a while. Moreover, I have already tried it just now, and I am sure that in this short period of an hour and a half, or even less, the eyelids of Ma Lijun's corpse have completely hardened. Unless it is covered with hot water or the palm of your hand for a short period of time, it is possible to soften it and close. ”

"Isn't it normal for a corpse to stiffen after death?" I asked, confused.

This time, there was no need for Mu Zihan to answer, the doctor explained to me: "Mr. Qin, no. In general, within one to three hours after death, postmortem stiffness begins to appear in the masseter muscles, neck muscles, and facial muscles around the lips. After four to six hours, the mortis spreads throughout the body. ”

"That's right. In addition, after death, the eyelids will not harden for a short time. Siyuan, if you don't believe me, you can ask Fang Ling if you have a chance. When their forensic doctors perform autopsies, they often touch the eyes of the deceased and check the pupils of the deceased. Mu Zihan added: "And I have also checked the stiffness of his body, and combined with the temperature of the corpse displayed by the instrument, I am even more sure that the time of his death is definitely between 12 and 1 o'clock in the afternoon." Therefore, even if we do not consider the time when Ma Lijun's family found him, it is calculated based on the mark of 2:15 p.m. now. He should have been dead for less than three hours. In such a short period of time, it would have been impossible for his eyes to stiffen so quickly that they could not be closed. ”

It turns out that the time of death of a human body can be judged not only by the stiffness of the corpse, but also by the temperature of the corpse. This is really the first time I know that there is no explanation of this aspect in the mystery dramas and detective films I have watched.

However, Mu Zihan quickly explained to me that the reason why the time of death is not judged by the temperature of the deceased's corpse in many criminal investigations is because the temperature of the corpse is affected by many external factors. Compared with the corpse stiffness, the temperature of the corpse fluctuates greaterly. Besides, it is also more troublesome to measure the temperature of the corpse.

According to Mu Zihan's account, after death, the heat production in the body stops and the heat dissipation continues, so the body will gradually become colder. It's like when many people complain about other people's cold hands and feet, they often say, "Why are your hands as cold as a dead man"? However, in fact, the corpse is not without temperature, or must be how cold. Rather, its temperature is closer to room temperature.

In fact, the cooling rate of the corpse is greatly affected by two major factors, both inside and outside the corpse

The intrinsic factors are age, physical condition, cause of death, and so on. Therefore, in general, strong spasms occur before death in people with strong bodies, obese people, tetanus, etc., as well as deaths caused by acute infectious diseases, sepsis, and acute heart diseases, and the temperature of the corpse decreases more slowly. On the other hand, the temperature of the body of the deceased in children, the elderly, the emaciated and those with chronic wasting diseases tends to drop more quickly.

Of course, this also has something to do with what the human body wears when it dies, and under normal circumstances, if the clothes are relatively thin at the time of death, then the corpse will be reduced to about the same temperature as the room temperature within three to four hours.

At the same time, the greater the temperature difference between the corpse and the environment, the faster the corpse will cool down. After the average adult dies, the average hourly temperature drops by 0.5 degrees Celsius. However, if the ambient temperature is very low, it will drop by about 1 degree Celsius per hour. Of course, if the ambient temperature is 40 degrees Celsius or above, then even after death, there will be no cold.

However, in this case, because Ma Lijun died in the intensive care unit with a constant temperature of 25 degrees Celsius, there is no particularly big difference between the body temperature and the human body. Moreover, Ma Lijun was a special police officer before his death, so it is needless to say that he is strong. Also, he didn't die of illness. Even if his body was found with only the lower half of his body under the quilt, the temperature of his body would never exceed 0.5 degrees Celsius per hour.

In addition, he still has so many medical equipment and instruments connected to his body until now, and many of them have their body temperature checked. Therefore, in this case, room temperature is relatively more accurate.

I have to say that the medical instruments that are still attached to his body have really played a very big role. After all, if you really want to test the temperature of his corpse, it will be quite troublesome without these instruments. Now, it's so intuitively displayed on the instrument display. All we need to do is do simple calculations.

Therefore, based on this, after matching the stiffness of his corpse, Mu Zihan was able to deduce the time of his death almost accurately.

"Therefore, there is only one circumstance that can make the eyelids of Ma Lijun's corpse harden to the point that they cannot be closed in such a short period of time." In the end, Mu Zihan concluded.

"What's the situation?" I asked urgently.

Sometimes I really can't stand Mu Zihan's character of selling Guanzi, just like now, I really want to pinch his neck directly and force him to say it quickly.

"Guess?" Unexpectedly, at this time, he actually sold Guanzi. However, then he may also find that everyone in the ward is staring at him in a daze. It is estimated that he himself felt embarrassed, so after smiling awkwardly, he continued: "That kind of situation is that in the moment before death, he was greatly frightened, or extremely physically and mentally tortured. As a result, the eyelids are not as fast as the nerve reaction, so there is no way to close the eyes. To put it mildly, this is the so-called death in ancient times. ”

(To be continued)