In forensic science, the results of trauma identification have extremely high forensic value, and through the observation and detection of wounds, it is possible to determine the type of murder weapon, whether it is a blunt force injury or a sharp weapon.

For example, if the wound is fusiform, like a grain of rice, with large sharp angles on both sides in the middle, it is a double-edged weapon, and if one end is blunt and the other is sharp, it is a single-edged injury.

The type and size of the murder weapon can be determined by the length and depth of the wound.

In this case, Yang Jing was able to judge a conclusion through investigation that the murderer focused more on the collection of organs than the pleasure brought by killing.

The collection of organs is like trophies, which shows that the murderer is definitely a serial murderer with a distorted psychology and even an antisocial personality.

Liang Shucheng was inevitably disappointed when he learned of this conclusion, but Yang Jing gave another direction!

"Lord Zhixian doesn't have to be discouraged, according to the results of the official's inspection, it may not be of much significance to arrest these eunuchs who are out of the palace, but this official can let you arrest other people..."

"Who is it?" Liang Shuwei thought that the clues he had finally gotten were about to be broken again, but he didn't expect Yang Jing to give him a new hope after destroying his hope!

Yang Jing saw that Liang Shucheng's eyes lit up, and he also smiled calmly: "Those who should be arrested are those who make eunuchs!"

"The one who made the eunuch?" Liang Shucheng was a little confused at first, but soon patted his head and said, "Yes!

"Lord Zhixian and look, this knife edge is basically round, even the cartilage is flat and removed, without leaving any stubble, ordinary butchers can't do this, and they can't do this without special knives, so the only one who can do it is the cleanser!"

"Cleansing master, Lord Zhentai is talking about a knife maker, right?" Liang Shucheng, the magistrate of the county, has already understood what Yang Jing meant, these people who castrate the eunuchs are the cleansing masters, usually called knife makers.

The eunuch system has existed since ancient times, and it is not unique to China, like the history of Egypt and other places, there are also eunuchs, called eunuchs, and in the Han Dynasty, there was a silkworm room, specializing in castration.

Because of their special status, eunuchs have always received great curiosity and attention from the world, although they are usually called eunuchs, but they also have serious official positions, and they are divided into three, six, nine and so on.

As early as the Tang Dynasty, the province of internal servants was actually established, and then the eunuch system began to become more systematic and more perfect.

Eunuchs are usually divided into four classes, the first class is called eunuch, which is a four-grade official rank, the second class is called a young eunuch, the third class is called a eunuch, and the fourth class is called a waiter.

Therefore, eunuchs were not cursing at first, because only high-ranking eunuchs could be honored as eunuchs.

Through the wound, Yang Jing analyzed that this section is too neat, it is simply a handicraft work in a handiwork, without professional training and years of practice, without enough experience, it is impossible to do this at all!

The murder weapon should be very sharp, the wound is round, and it should be caused by circumferential cutting, so the murder weapon should be an arc or semi-circular scimitar, and this kind of scimitar, Yang Jing can only think of a small sickle used for body castration.

This small scythe is made of an alloy of gold and copper, because the ancients believed that gold was a good thing, and castration with a gold knife would not cause inflammation.

This purification is a technical work, and it is the same as the work of the father, which is passed down from generation to generation.

Due to the relatively low level of medical care, in ancient times, men were castrated like women giving birth, it was a matter of nine deaths, castration was not good, the wound was not round enough, not small enough, and the eunuch would have the sequelae of urine leakage.

Therefore, eunuchs usually carry incense sachets on their bodies and use various spices to cover up the smell of urine on their bodies.

This is only a minor problem, wound infection is the biggest problem, and it is very lucky that three or two of the ten castrations can survive.

And these purifiers, that is, knife makers, they have always been eunuchs, and if they want to survive as much as possible, they have to pay a higher price.

Many people are actually very curious, which part of this eunuch castration is cut?

As mentioned earlier, this is an extremely dangerous behavior, so you must make sufficient preparations, do not eat for three to five days, empty your stomach, after all, the wound does not heal after cutting, and if you skim urine several times a day, the chance of infection is higher.

Then you have to drink something like stinky marijuana water, which is used for anesthesia and also has the effect of postoperative analgesia.

The cleanser will first make small openings on both sides of the balloon to squeeze out the balls (i.e., balls) first, and the second part is to cut off the little brother by the roots, and then save the two things with lime and grass ash or something.

If the cut is deep, after the wound heals, the meat will sink inward, and a pit will be formed, which is similar to a shower when it is convenient, so nine out of ten eunuchs have diaper crotch problems.

After the incision, a tube or wheat straw is inserted into the wound to allow all the urine to drain out, and it is washed with herbs such as mugwort leaves, dandelions, and honeysuckle vines.

Other things are secondary, but knife skills are technical skills.

According to Yang Jing's analysis, what Liang Shucheng is looking for is not a eunuch at all, but a cleanser who cleanses the eunuch and creates a eunuch!

Maybe these people cut too many other people's dings, and cut out the perverts, and now there are no dings to cut, so they cut other dings everywhere.

Of course, this kind of purification is hereditary, and the government has a register, which is not something that ordinary people can do.

Moreover, some people think that this kind of deception is detrimental to yin morality, and even if the income is high, no one will learn it.

It's not that you can go in casually, you can go with the treatment for 30 minutes, and you can go as usual the next day, this is dicing, not circumcision.

Before the knife, you have to sign a document, which is similar to life and death, it is an official document recognized by the government, and you have to confirm it again and again before cutting, giving you enough opportunity to regret it, if you regret it when you see the knife, it doesn't matter, just put on your pants and go home.

It is precisely because the government has registered that it is not difficult to catch these people at all.

Besides, there were a few in Jiankang Mansion earlier, but they had already moved to Lin'an Mansion, and now there is only one left, just like those eunuchs who were expelled from the palace, belonging to the ethnic group that was abandoned by the royal family.

Thanks to the government's population and industry registration, it is not difficult to find this family, Liang Shucheng immediately asked people to arrest people, after all, Yang Jing will leave tomorrow morning.

This case has dragged on for so long, and Liang Shucheng is also under pressure, and now that Yang Jing has come, he has found a breakthrough, how can he let go of this opportunity!

Everyone was also amazed when they heard Yang Jing's analysis, but when they remembered the picture of Yang Jing's autopsy, they still couldn't help but want to vomit, and there seemed to be the warm stench that had been held in the internal organs for a long time in the mouth!

Originally, it was going to arrest those eunuchs who left the palace on a large scale, so the officers and soldiers of the county government gathered, and these were good, and they went out directly, and within half an hour, the purifier was arrested.

The man was an old man in his fifties and sixties, with a messy head, full of alcohol, and a red rosacea, and his whole body was soaked, and his face was covered in mud and sewage, and he had obviously resisted.

"This old man is so ferocious that he also hurt our two brothers!" the head catcher angrily threw the old man on the ground and presented a set of knives in front of Yang Jing and the others.

Liang Shucheng opened the holster, and sure enough, he saw a golden sickle-shaped arc knife in the knife!

"Zhu Laosan, you killed innocent people, the crime is not punishable, today everyone has obtained the stolen goods, you can plead guilty!" Liang Shucheng pointed at the old man and complained.

This Zhu Laosan may be the third in the ranks, but it can be seen from the roster registration that Zhu Laosan is not his nickname, but his serious name.

In ancient times, some lowly civilians did not even have the right to take a serious name, and could only use the surname plus the rank as the name, this system has continued for a long time, such as Zhu Yuanzhang, the founding emperor of the Ming Dynasty, whose family was poor when he was a child, and his name was Zhu Chongba.

Yang Jing is also used to this, he heard that Liang Shucheng was still accusing Zhu Laosan of the crime, but Zhu Laosan was like a drunkard, only knowing that he was squeaking and screaming, and from time to time he vomited for a while, Yang Jing walked to the front and checked the wounded officers and soldiers.

These two officials were both injured by Zhu Laosan, Yang Jing saw that the wound was very accurate, piercing into the joint, which could limit the enemy's ability to move, but did not hurt the blood vessels, and tried to only be injured and not killed, so as to avoid death.

Although this Zhu Laosan is drunk, he is still able to do this, which shows that his knife skills are quite good, and he has enough understanding of human body structure!

The ancients were not like Yang Jing, who dissected the corpse at every turn to examine, the so-called dead are big, and very few people dare to do this, so those who understand the structure of the human body, in addition to doctors, that is, some martial artists, of course, there are related professions such as butchers.

At this time, Zhu Laosan finally understood why he was arrested here, so he just sneered and said: "It turns out that the county magistrate just wants to catch a black pot, the old man I thought it was something important, and it is not impossible for the adult to want me to take the blame, after the old man I also broke off, there is only one wife left in the family, if the adult is willing to help my old wife to support the old man and send him to the end, Lao Tzu will give you the guilt!"

When Liang Shucheng heard this, he was immediately angry, he was an ambitious young official, and his ambition in life was to be a master of the blue sky, and he would never wronged a good person, nor would he let go of any bad person!

"You are presumptuous! Since this official can take you, he will definitely not wronged you, and you will come and see what you have done!"

Liang Shucheng grabbed Zhu Laosan, dragged him to the room, pointed to the corpse, and said all the inferences of Yang Jing's suitability, thinking that Zhu Laosan would confess his guilt, but this old man laughed!

"It's not that I look down on the official master, you ask these old men, I don't know which of Zhu Laosan's skills, it seems that this kind of knife edge can be done by Zheng Butcher at the end of the street, after my Zhu Laosan has been broken, it is useless to ask for money, and there is no hope in life, and it is nothing more than death to give you the guilt, but you want to humiliate my craftsmanship, but it can't!"

"I, Zhu Laosan, have never broken a disciple in my hands for half of my life, people can die, and their reputation cannot be ruined!"

Yang Jing couldn't help but be surprised, he also knew that castrated people would generally go through the apprenticeship ceremony and regard the purifier as a master, this is his origin, and he will gain power in the future, and he will often come back to pay respect, after all, his life is in the hands of the purifier, and if he walks in the ghost gate, the purifier is the existence of regenerating parents.

As Zhu Laosan said, he has never castrated anyone in his life, this kind of amazing kung fu, why did the palace leave him in Jiangning in the first place, and did not bring him to Lin'an?

Putting these aside, Yang Jing thinks that this Zhu Laosan should not be a murderer, but these need evidence to support it, as for the truth, Yang Jing has to ask Zhu Laosan for verification!