what's in the depths

"This...how to check." Zhu Yuhan squatted beside the corpse, took the corpse's hand and looked at it, then put it back.

"The degree of decay is too high, and it's impossible to judge based on the appearance alone. I can only say that you first check whether there have been any missing persons reported recently. I first judge the age of the deceased based on the morphological characteristics of the pubic symphysis."

"Pubic symphysis? Isn't that a big project?" Zhu Yuhan asked.

"Yes, it is more troublesome to dissect, but there is no other way."

Chu Rong forced a smile, then put on gloves, goggles, protective clothing, and "invited" Zhu Yuhan out of the dissection room.

When dealing with some corpses whose surface identification is too low, forensic doctors usually infer the age of the victim based on the pubic symphysis, because the pubic symphysis is less affected by external factors, and the grooves and ridges of the symphysis will gradually change from high to sharp with age The more flat the bone is, the looser the bone will be.

Substituting the nine morphological characteristics of the pubic symphysis into the corresponding formula, the approximate age of the victim can be inferred according to its scoring mechanism, and the error is generally between two years old.

Furthermore, the precise age is determined according to the degree of wear of the teeth. The degree of wear is also divided into nine levels, and the degree of wear is different in different age groups. Combined with the corresponding shape of the pubic symphysis, a more accurate number can be calculated.

Chu Rong recorded the scoring mechanism based on the shape of the deceased's pubic symphysis, and then substituted it into the formula "Y=M+X1——X9" and finally got a number of 17.32.

When Zhu Yuhan saw this number, his first reaction was that the deceased was a high school student.

Chu Rong said that there were many open wounds on the body of the deceased, which were initially judged to be caused by sharp objects such as awls or screwdrivers, but the fatal wound was at the temple of the head.

The skull is the hardest bone, but the temporal fossa is softer and more prone to fatal injuries.

"So, this case is homicide?"

Chu Rong shook his head: "If I'm not wrong, it should be suicide."

"Suicide? How is it possible to poke yourself into the temple with a screwdriver? Let alone this person has such great strength, how strong is the psychological quality to commit suicide in such a cruel way."

"The temporal fossa is very soft, and minors have enough strength to insert a sharp object into the temporal fossa, and the rest of the wounds are relatively concentrated, all distributed around the face, and the furthest distance is also in the neck. According to the deceased's hand Judging from his movements, he didn't experience any violent struggle before his death."

Zhu Yuhan bit his finger thoughtfully, and after a while, he looked up: "That's right, if the murderer stabbed him so many times, he would definitely struggle."

"In this way, the deceased knew that the temporal fossa was the softest part of the skull, so it may be that the sharp object was fixed on the ground and fell down so that the sharp object hit the temporal fossa hard and the sharp object penetrated the head. However, due to an error in the position calculation, It took many attempts to succeed, and I have to say, this person is really too cruel to me." Chu Rong looked back at the corpse on the dissecting table and sighed.

"But if it was suicide, why didn't the deceased wear any clothes?"

Chu Rong shrugged: "I don't know about this. There are too many reasons. Either I tried other methods of death first, or I was picked up by a homeless man. These are all possible. But if it is homicide, after determining the target is the temporal fossa Under the circumstances, and without any fierce resistance from the deceased, it is impossible for the murderer to stab so many times in other places and leave clues to the police."

"And, you think, this kind of definite target must have been prepared, or it has been planned for a long time, so there is no such thing as poisoning to death first and then hitting the temple. This is too much, isn't it, and the deceased died in the mountains , how would the murderer lure him to a deep mountain and then feed him medicine? It’s impossible. It’s even more impossible to feed him medicine first and then drag him up the mountain. There’s a ramp over there, and there are many cameras, so he can only go up from the other side of the mountain, but there It cannot be used by vehicles, and it is too strenuous to drag such a male corpse up the mountain with bare hands."

Chu Rong found the pubic symphysis from the specimen room and made a detailed comparison with the pubic symphysis of a 20-year-old man, and finally concluded that the age of the deceased was .

"A high school senior or a freshman." Chu Rong was very sure.

"High school students are more likely. There are no universities around the crime scene, but..."

Before finishing speaking, Chu Rong raised his head and glanced at Zhu Yuhan, the two exchanged glances, then nodded affirmatively:

"Chongwen Middle School."

"Yes, Chongwen Middle School is the closest to there, about twelve kilometers away."

Zhu Yuhan rested his chin, looked at the string of formulas on the paper used for checking calculations, and wondered if this suicide case might be related to the notorious "King's Game" again.

"What about the time of death?"

"It's impossible to judge accurately now. After all, the weather conditions are quite special these days. With the return of temperature and heavy rain, it seems that God is deliberately destroying evidence to embarrass the police."

"Then I'm going to criticize God." Zhu Yuhan rolled his eyes.

As he said that, Zhu Yuhan got up and stretched, his bones creaked.

"I haven't exercised for too long, and my body is almost rusting."

Chu Rong smiled mysteriously, took out two tickets from his pocket and handed them over: "It just so happens that my friend gave me two tickets for bungee jumping, do you want to go together this weekend?"

Zhu Yuhan glanced at the ticket in disgust, and waved his hand: "I'm excited enough to watch corpses and murder scenes every day, so please forgive me, life is so beautiful, why do you always have trouble with your little heart."

"Really not going?"

"go."

Life is beautiful, and the little heart should be quiet for a long time, but it has become more colorful because of various unknown stimuli, so of course Zhu Yuhan will go. He has been thinking about bungee jumping tickets since half a month ago. It was sold out as soon as it went on sale online.

Before, if you want to bungee jump, you have to go to Linshi, but you may not be able to get a number. This time, the first bungee jumping park has finally been built in this city. How can you miss this great opportunity.

"Comrade Rong Rong, you are amazing, you are like the linear roundworm in my colon stool, you know everything I think." Said, Captain Xiao Zhu rushed over and gave Chu Rong a big hug .

"I think it's okay for you to watch less messy movies, read more books and newspapers, improve your self-cultivation, expand your vocabulary, and don't let your head be like a trash can, pretending to be disgusting."

Although Chu Rong said so, he fondled Captain Xiao Zhu's hair with his hands.

When Zhu Yuhan got the ticket from Chu Rong, he rubbed it in his hand several times like a treasure, until the shameless cry of a dead monkey rang out, then he carefully put the ticket away and answered the phone.

"I wish the team, it's urgent, return to the team quickly." On the other end of the phone, Xiao Liu's voice was slightly anxious.

After putting away the phone and hurriedly saying hello to Chu Rong, Zhu Yuhan strode out of the research institute and got into the police car.

Xiao Liu is a person who usually has a playful smile on his face and is not serious. It is rare to see him so serious.

So, the situation is unusual.

When Zhu Yuhan rushed back to the police station, he saw a group of police officers, some from any department, surrounding a courier talking about something.

"Zhu team, you are back!" Seeing Zhu Yuhan, Xiao Liu rushed forward as if seeing his own mother.

"There is a new development in the case."

"Which case?"

Xiao Liu hurriedly pulled him over and saluted the courier in the middle: "Please repeat what you just said to our Zhu team."

Zhu Yuhan saw that it was the courier who delivered the "death notice" twice at the beginning. He was also excited when he saw Zhu Yuhan, and took out a document bag from the courier car and handed it over:

"Officer, today we checked the courier truck and found that a document just fell into the crevice. The courier and the courier didn't call to remind them, so everyone didn't notice. It just happened to be dug out today, but, you see , This courier was also sent to the police station, and the delivery date was No. 16 last month, and it has been more than a month."

When Zhu Yuhan heard this, he became anxious, reached out and grabbed the document and opened it on the spot.

It's still six sheets of paper, and it's still the comic strip with the letter "HOLYKING" written on it.

And this story records the story of the boy fixing the screwdriver to the ground with a glue gun, repeated experiments, and finally killed himself in the deep mountains.

The method of death of the deceased that Chu Rong guessed was exactly the same.

It sounds like a fantasy, but this is the truth of the case.

"And our boss retrieved the monitoring of the day and found such a person. He handed over the documents to an old lady and gave her a sum of money, asking her to help deliver the courier." The courier took out his mobile phone: "I have already copied it to my phone."

Turning on the surveillance video, the video showed a boy wearing a peaked cap and trendy brand handed the folder to a plainly dressed old lady, and gave her a thick wad of RMB.

The old lady looked very happy, and she didn't have time to think too much, so she went straight to the courier agency to help deliver the courier.

The reason why it is called a boy is because different age groups walk with different temperaments and auras.

Without considering special cases, most young people will walk like the wind, with easy strides and swaying figures;

After the baptism of life, middle-aged people have become mature and stable, with small steps and extremely stable stature.

Furthermore, looking at this outfit, they are all very particular fashion brands and niche brands with high prices. It can be seen that this person should pay great attention to quality in his daily life but is unwilling to follow the trend and compare his personality. , Zhu Yuhan still doesn't quite believe that an uncle is dressed like this.

Not to mention uncle, people in their early thirties are embarrassed to wear it like this.

Moreover, the baseball cap worn by the boy in the video is the limited-edition baseball cap with the ferocious cat logo, which is completely consistent with Shi Lingyi's little sister's confession at the time.

"Contact the general agent of this baseball cap in China immediately, check all the purchase records in this city, sort out the list, and don't miss any."

But this time, Fu Yuzhi, who comes from a wealthy family, has an outstanding temperament, and has excellent grades, really became the first suspect.

There are indications that he is the most motivated person.

In the afternoon, Zhu Yuhan stepped into Chongwen's school gate again and asked the dormitory supervisor to find out the situation.

The housekeeper told him that there were originally six students living in Fu Yuxing's dormitory. After the accident, the other three did not dare to stay, so they applied for day school. One of them may have been deeply affected by it and hadn't been to school for a long time. Maybe the final exam won't even come.

I found Fu Yuzhi's head teacher after a while, and the head teacher took him to meet him. As soon as the two of them went to the back door, they saw Tong Si who was dozing off in the last row.

The teacher flew over with an eraser and hit Tong Si on the mouth.

There was a burst of laughter in the classroom.

Tong Si woke up with a start, quickly wiped the chalk off his mouth, and pretended to concentrate on reading the English textbook. Immediately afterwards, he was "invited" out by the English teacher.

As soon as they went out, they met each other's eyes, which was very embarrassing.

"Zhu team, why are you here?"