Chapter 182

Although there aren't many normal people in forensic medicine, compared to Chen Fan, most forensic doctors are actually too normal.

"The blood in the cardiovascular system lacks power and settles in the lower parts of the corpse along the vascular network, resulting in the emptiness of the high-position blood vessels and the congestion of the low-position blood vessels. The capillaries and small veins in the lower parts of the corpse are filled with blood, showing dark red to dark purple-red spots through the skin. These spots start as cloud-like, strip-like, and finally gradually form patches, which is livor mortis."

In the observation room, of the few celebrities who arrived, Yuanyuan was the most shocked and said, "Wait, is Chen Fan giving a lecture to these graduate students and doctoral students?"

This remark shocked everyone present for a long time.

Teacher He said, "That's right. If Yuanyuan hadn't said it, we would have almost forgotten. It really is, Chen Fan is giving a lecture to this group of people, and he's even giving a lecture to these professors. Qin Ming, what do you think?"

Qin Ming said, "What can I think? I'll just look with my eyes. I actually want to see something else, but I really can't understand Chen Fan. Before, I just felt that Chen Fan and I could talk, and then we became good friends, but now looking at it, I even feel, does Chen Fan think I'm suitable for autopsies?"

？？？？？

No, is that polite, talking like that?

Over here, Ling Hua said, "However, I'm quite curious, where does Chen Fan have so much time that he's even willing to spend effort researching these things?"

Qin Ming said, "I've profiled Chen Fan with Li Tian. No matter how you profile him, you feel that this guy has 100% killed people, and the number of people is not small, but now looking at it, it's completely not the case. Calculate the time, this child must have started killing from the age of eight, hacking all the way, until now, to have a reference."

Everyone was dumbfounded.

Teacher He said, "Who is the reference person for the profile?"

Qin Ming said, "Cheng Ruofei, who else could it be? That girl has the highest IQ among them and the best academic performance. Based on that girl as a reference, and then adding some of Xiang Qinqin's worldly wisdom, then, we got such a piece of data, and then there was no then. I can only say, in the world, there really exists a kind of person who likes a certain discipline, and then it becomes like this."

Yuanyuan said, "Then let me ask again, what about Chen Fan's strange and peculiar skills?"

Qin Ming said, "I think, is this guy thinking every day about how to kill someone, and still be able to do it without anyone knowing?"

And over here, Old Song and Li Tian appeared at the office door.

The two didn't speak, signaling Chen Fan to continue the lecture. Although there was a case, there was no rush.

. ..............................

Chen Fan looked at the two and didn't say much.

He continued his course over here.

"It is directly related to the posture of the corpse. For example, for a corpse lying flat on its back, livor mortis appears on the occipital, top, back, waist, sides of the buttocks, and the back of the limbs, and sometimes it is also seen on the sides of the corpse, and even on the inclined areas above, such as the upper part of the clavicle. For a corpse lying on its stomach, livor mortis is distributed on the face, chest, abdomen, and front of the limbs, and at this time, the conjunctiva of both eyes is often congested. For a corpse in a standing position, such as a hanging corpse, livor mortis appears on the lower limbs, lower abdomen, and the distal end of the upper abdomen, mostly purple-red or dark purple-red; for those who died of gas or cyanide poisoning, livor mortis is cherry-red."

"Generally, it can fade when pressed with a finger within ten hours, and it will recover after the pressure is removed; if the corpse is turned over, the original livor mortis will gradually disappear or shift, and reappear in the new lower position. Therefore, when a forensic doctor examines a corpse, they often judge the position where the corpse was placed based on the distribution position of the livor mortis. Livor mortis is one of the earlier corpse phenomena, usually appearing 2 to 4 hours after death, developing to the highest degree after 12 to 14 hours, and becoming fixed after 24 to 36 hours, no longer shifting, and lasting until the corpse decays."

Over here, Old Liu said, "These things are all in the books, what I want are different things."

Chen Fan said, "The data given all have gaps, and the longer the case, the harder it is to determine the specific time of livor mortis, isn't it? However, Master, we are forensic doctors, we can't just give a general concept, right?"

Old Liu nodded, but this thing can't be researched, because the human body is the greatest mystery, and no one can guarantee that they can truly understand the mysteries of the human body.

Chen Fan said, "I generally divide it into three time points."

Old Liu was stunned for a moment and looked at Li Tian.

Li Tian was also stunned. Something is wrong, Chen Fan, this guy is not right.

Damn, this is not the Chen Fan I know. Damn it, not good, this guy is about to start showing off.

"After a person dies, in addition to blood circulation, tissue fluid also settles in the lower parts of the corpse, settles in the tissues around the blood vessels, penetrates through the blood vessel wall and enters the blood vessels, mixes with the blood to promote post-mortem hemolysis, and then the plasma diluted by tissue fluid and stained red by hemoglobin oozes out of the blood vessels. This is the diffusion period of livor mortis. Livor mortis generally takes 12 hours to develop to the diffusion period, and fast ones take 8 to 10 hours. The diffusion period is a continuation of the settling period. During this period, pressing the livor mortis with a finger will fade slightly, and after changing the position of the corpse, the original livor mortis will not easily disappear, and new livor mortis will not easily form. If you cut the skin at the livor mortis in the diffusion period, blood droplets will gradually flow out from the cut blood vessel ends, and a small amount of light red liquid will overflow from the tissue."

"And at this time, I call it the diffusion period, in order to prepare for the next stage."

Li Tian was speechless and said, "You watch, I'm not watching anymore. Damn, this guy showed off, so annoying. The thing I hate most is that someone is better than me."

Old Song said, "Yeah, and also more handsome than you."

Damn, no friends, okay?

Over here, Li Tian said, "That's about enough. You've said so much stuff, I'll give you something, let me see how you judge it."

After finishing, he handed a bag to Chen Fan.

Chen Fan opened it, took a look, then took it out and said, "An eyeball?"

"Yes, an eyeball. This is what has been found so far. Where the specific corpse is, I don't know. It was found by crows. Farmers in the countryside saw it on the side of the road and called the police at the time. The police searched the surroundings several times, and finally had to accept that this was the reason the birds carried it while flying."

Old Liu said, "You, I don't even have a place in the freezer to put this for you. Aren't you making things difficult for my apprentice?"

"But what can we do? What can you do, Old Liu? I ask you, can we just ignore this thing?"

Old Liu was speechless.

Chen Fan looked at the eyeball, then looked at the surrounding flesh, reached out, and pinched it.

"Yeah, it's not that I can't judge it. The time of death should be three days ago, specifically at about 10 o'clock three days ago. Any more specific than that, I can't do it."

？？？？

Damn, I knew this guy was weird.

"Something's not right. If it was after 10 o'clock three days ago, then the time the crow discovered it couldn't be locked down. This still won't help find the corpse."

Chen Fan pointed to the blackboard and said, "I've said it many times, let you read more books, but you just don't listen."

Why is this child scolding people?

"For corpses in water or under freezing conditions, because oxygen penetrates into the subcutaneous blood vessels, forming oxyhemoglobin, so its livor mortis is red or light red. For burned corpses, because of inhaling carbon monoxide before death, the livor mortis of the unburned parts is cherry-red. When poisoned by potassium chlorate and nitrite, because of the formation of methemoglobin, the livor mortis is grayish-brown. The skin color of white people and black people is different, and the presentation of livor mortis is also different. Black skin can cover the color of livor mortis. With the development of post-mortem changes, the dark purple-red of livor mortis gradually turns into light green and green, merging with the color of the decaying corpse."

Chen Fan muttered to himself. Over here, Old Song was dumbfounded and said, "What, what, what is this saying?"

Li Tian said, "It just means that this eyeball was in water or under freezing conditions."

"Yes, there is clearly some livor mortis on the eyeball, although not much, it exists, light red, and besides, this flesh, it's been three days, it should have rotted long ago, it didn't rot that fast, it didn't rot that seriously, it's estimated that it was in a special environment. You have to know, soil always rots faster than water."

Li Tian calculated and said, "In water?"

"Best if it's in water."

Li Tian understood. If it wasn't in water, refrigeration would be unrealistic, because crows wouldn't go there. If crows would go there, then it was intentionally killing someone, freezing them, and then throwing them into the wild or something.

Chen Fan said, "For now, this is all a forensic doctor can calculate. In addition, I'll give you a hint: this person's eyeball is a bit nearsighted; this person should be nearsighted."

Li Tian said, "Anything else?"

Chen Fan stared seriously at this eye, thinking, and said, "This person's pupil is telling me that before this person died, blood had entered the eye."

"I know, this thing is just a matter of probability."

Chen Fan said, "But the eye's adaptability is quite good, normally there is damage, so this person must have been doing something that easily gets into their eyes."

Old Song calculated and said, "Forget it, I've listened for a long time and still don't understand. Over here, just mobilize the community, let the masses look for it. In addition, find an animal scientist."

Chen Fan continued the lecture.

At about 10 o'clock in the morning, the director's phone call came, telling Old Liu that the corpse had been found.

"Director, how did you know?"

"Yeah, someone watched the live broadcast, they themselves are studying crows, and happened to be here, so they went out to look, and finally found a group of crows that were gnawing on it. The person is already at the police station. When calling, the person was a bit scared."

Old Liu hung up the phone and said, "Fine, this time, it's still your credit."

"Mine?"

"Yes, your fans helped find the corpse, it's just that your fan's current state is not very good, you'd better go take a look."

"Master, selling one's looks is not what we forensic doctors do."

"The other party is very beautiful."

The next second, Chen Fan threw away his pen and said, "Let's go, where is it? I must go and comfort my fan properly. I absolutely cannot let my fan suffer any grievances."

— Author's Notes —

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