Chen Feiyang went out to look for something according to what the master said, but it was really difficult to find what Han Dada'er wanted in the evening, so Chen Feiyang could only knock on the door of a lottery shop to buy something similar, and then hurried back to the scene.

Chen Feiyang handed a bundle of white silk cloth to Han Da'er. At this time, it was bought in the zha cai shop, and people used it to do white things and write things for the couplet, which was different from the general white cloth, and the surface was very silky, a bit like a silk handkerchief.

Han Daring tore the silk cloth into a rectangle, about the same width as the door of the inner and outer rooms, and then spread it from the inner room to the outer room. He asked Chen Feiyang to sit on the silk cloth in the inner room, with his back to the outside and facing in, and then put the big iron lump between Chen Feiyang's legs, and then pulled the silk cloth vigorously in the outer room.

Since the gray floor in this room was very smooth, it didn't take much effort to pull Chen Feiyang and Tie Lump, who were sitting on the silk cloth, to the door. Then let Chen Feiyang hold on to the side of the door, his hands were injured and inconvenient, so he raised his elbows and tried to support the door frame as much as possible. The door of the room here was originally narrower, and Chen Feiyang propped his elbows horizontally, just enough to get stuck on the door frame.

At this time, Han Daring pulled hard, and the silk cloth that Chen Feiyang was sitting under his buttocks was pulled out of the house in an instant, but the iron bump hit Chen Feiyang's crotch under the inertia of this pull, fortunately he clamped his legs in time, otherwise this time, he would have to roll his eyes.

Han Da'er asked:

"Got it?"

Chen Feiyang covered his crotch, jumped a few times, nodded with bared teeth, and then said:

"Got it, got it! But Master, before you do it, you should let me know, our family has nine generations of single transmission, and it is almost extinct! ”

Chen Feiyang slowed down for a while before he said again:

"You mean that someone killed the man in the house, then set up a dust explosion mechanism, and then closed the door and used this method to pull the corpse and the iron lump to the door against the door, and finally pulled the silk cloth and the like through the crack under the door, right?

But there is one thing I don't understand, this corpse is dead, how can it sit obediently on the silk cloth with the living people, and then be dragged behind the door against the door! And with the strength of ordinary people, can they pull the corpse with iron bumps? ”

Han Daring said:

"I have not recovered from my injury, and I can pull it if I don't have enough strength, which should not be difficult for a normal evil adult.

As for letting the corpse sit obediently on the silk cloth, it should be that after the murderer killed the deceased, let the deceased lean against the wall, and wait for the corpse to form and the corpse sit at a right angle before starting to arrange the scene, so the corpse spots are concentrated on the waist, hips and back of the thighs!

In addition to the sitting position, the corpse should have been stretched out and hung down at the sides, with the palms spread out as support on both sides to prevent the corpse from falling on its side when dragging the white cloth. The pimple was supposed to be placed between the corpse's legs.

After the corpse is pressed against the door, the silk cloth and other things are pulled out through the gap under the door. After the silk cloth was pulled out, the weight of the corpse and the weight of the iron lumps, coupled with the friction between the rough surface of the iron lumps and the gray ground, made people have to hit hard outside the door to knock the door open.

On the one hand, the secret room can be faked, and on the other hand, the door must be opened quickly by impact, so that the foreign fire head tied under the door can rub sparks on the phosphorus sheet paper sticked to the ground.

We just asked the landlord of this house, and the landlord also said that this house used to be an ordinary brick to the ground, and since renting to this tenant, the tenant said that he likes to be clean, and paid for the landlord to find someone to find a plaster floor according to the requirements, and use more plaster, and then polish the side after plastering, so that the ground is very smooth.

A smooth ground of ash is a necessary condition for this technique, otherwise it would be impossible to pull out the silk cloth and other evil things from the rough ground through the cracks under the door.

This is also the reason why there must be a gap under the door, otherwise he can completely seal the gap under the door, create a confined space, and then use white phosphorus and explosives with a fuse to create a trap that is more difficult to detect, without the trouble of making a flour dust explosion mechanism. ”

Saying that, Han Daring turned over the iron lump, took off two thin dark silk threads on the thick surface of the iron lump, and then continued:

"When the silk cloth and the like were sucked away, some of the silk threads were scraped off, and even if the sparks from the dust explosion and the secondary explosion in the outer room burned the fabric hanging on the iron lumps, they would still leave a few traces!

I guess the murderer used a dark-colored silk cloth at the time, and if you use white silk like the one you brought, in this bungalow area, there are many people, and it is difficult to ensure that such a conspicuous white color will not be discovered. ”

Chen Feiyang scratched his head and said:

"In the middle of the night, I can only find similar materials in the color shop, except for the medicine shop, the coffin shop, the paper shop, other shops, and people don't open the door in the middle of the night!"

Then he said:

"Master, according to you, is the one who died the ripper imitator?"

Han Daring took the oil painting covered with gouache just now, and said:

"This gouache painting is a self-portrait of the deceased, the self-portrait should be drawn in the mirror, and the person in the painting is holding a pen in his right hand, which shows that the deceased should have held a pen in his left hand when painting this self-portrait!

According to the three caesarean sections that have been discovered so far, it is speculated that the murderer's dominant hand is the right hand, and if the male corpse is the ripper impersonator, then he should hold the pen in his right hand!

Unless he can use both hands as an oblique hand, he is not the impersonator, but a substitute who can also draw by the impersonator! ”

Chen Feiyang asked:

"Master, what if he can really do it with both hands?"

Han Daring said:

"I think it's very unlikely!"

"Why?"

"I saw the corpse at the epidemic prevention officer, and I paid attention to the hands and feet of the corpse at that time. The average person's dominant hand is slightly larger than the other hand, and the musculoskeletal system is more developed because of regular use......"

Saying that, Han Daring spread out his hands and showed Chen Feiyang. Then he continued:

"If you are a person who is engaged in manual labor, you only need to look at the thickness of two arms to tell which hand is the dominant hand, and the arm that is constantly exerting force must be thicker than the other!

The same is true for people who draw or do some pen work, but this kind of person is not easy to distinguish by the thickness of the arm and the difference in muscles, but this kind of person often holds the pen, so on the outside of the index finger and the position of the thumb, it will grind calluses or crust!

There are right-handed people and left-handed people, and the weight of the feet when walking is also different, if you look closely, you can also find clues on the soles of the feet!

The murderer was afraid that the investigators would find that the deceased's habitual hand was his left hand, so after committing the murder, he smeared some flammable substances on the deceased's hands and feet, and the dust explosion and the fire of the secondary explosion ignited the flammable materials on the deceased's hands and feet, and burned the deceased's hands and feet to charcoal, so that it was impossible to distinguish the deceased's habitual hands!

This is why the deceased was shocked by the shock wave of the dust explosion, and experienced the flames ignited by the secondary explosion, and his hands and feet were scorched, but his body was only burned and burned. ”

Han Daring's reasoning made Chen Feiyang quite fascinated by it, and he couldn't help nodding his head while listening, his eyes were full of reverence.

Han Daring said again:

"When I looked at the corpse before, I found a knife wound on the arm of the male corpse, and it was a new injury, originally I thought that this injury may be caused by the knife in his hand when he was raided by the imitator, and I wanted to find the knife to compare, and collect blood for comparison!

But when I saw this self-portrait just now, I thought that since the male corpse was left-handed, when he cut the throat of nine and a half fingers with a knife, nine and a half fingers hurriedly returned fire, and the most likely one to cut with a knife was the left arm of the imitator, but the knife wound on the arm of the male corpse was on the right arm, which must have been deliberately done by the murderer.

And the most important point is that the nine-and-a-half-fingered knife is just an ordinary dagger, although it is sharp, but when he killed Lu Jun, he used a knife to cut the bones, so the blade has a curl and a chip. If this knife caused a knife wound on the arm of the male corpse, the knife edge would never be so smooth, and there would inevitably be jagged or laceration marks!

I think that before the body died, he must have been bound hand and foot, and he was imprisoned for some time in the back room of the studio, and the murderer deliberately left a knife wound on the deceased's right arm at that time! ”

Chen Feiyang said:

"Master! Even if the wooden door of this house is locked, can it trap a large living person? ”

Han Daring said:

"Lao Su checked the gastrointestinal tract of the corpse and found that he had not eaten for a few days before he died, and he was starved for a few days, and his hands and feet were tied, even if he wanted to, he had no strength! As for the traces of the male corpse's hands and feet being tied, the charred hands and feet can be said to kill two birds with one stone, which can not only erase the fact that the deceased was left-handed, but also cover up the traces of being bound! ”

"Oh! Yes, indeed! ”

Chen Feiyang thought for a while and asked:

"Master, why is there a layer on this oil painting self-portrait, huh...... What's that......"

"Gouache!"

"Yes, gouache! Why is it covered with a layer of gouache? ”

Han Daring said:

"I think that the deceased knew the ripper and the ripper mimics, or were friends or some other relationship, and after the deceased painted this self-portrait, for some reason, he didn't want to be seen by the imitator, so he painted again with gouache paint and covered the oil self-portrait!

The murderer, the real evil copyist, didn't notice the picture, or it would have been taken away and destroyed by the murderer! It won't fall into our hands!

As for why the deceased did this, it will only be clear after the identity and social relationship of the deceased have been clarified! ”

Chen Feiyang said:

"Didn't the landlord of this house say that the one who rents the house is the deceased! If you try him again, you may be able to gain something! ”

Han Dada'er said:

"You have to let the landlord identify the body, the murderer can pay for an intermediary, so the landlord may not see the deceased or the murderer himself!"

Han Daring rode a bicycle carrying Chen Feiyang, took the oil painting, and on the way to leave the explosion site, he was still analyzing clues, but who knew that it was raining halfway. Han Daring was caught off guard, he was busy with injuries and sweat on his body, and then he was drenched in the rain, and he began to have a high fever when he returned to the main hall.

The high fever lasted for three days, and Mei Ruohong had been by his side to take care of Han Da'er for the past three days, but when he gradually sobered up, he had made an appointment with Bai Chongwei early in the morning, but the meeting with the organizer of the small auction had been delayed.

The wounds on Han Da'er's body were basically healed in a few days. At this time, there are still a few days left, and the small auction is about to start. But now his mind is all about catching the copycat, and he can't care about the auction, so he has been running around non-stop for the past two days to investigate the identity of the male corpse.

The landlord of the studio looked at the corpse, but said that it was not this person who rented the room.

The corpse in the pit, the prostitute Qiu Yan, once wanted to hook up with a young man who haunted the neighborhood like a student, but was reported by the police and locked up for a few days. The secret prostitute who was with Qiuyan recognized that the male corpse in the studio was the man who was harassed and called the police at that time.

According to the police report, this is a student named Yang Ming, who has just turned 20 years old. He was fond of painting and copying world famous paintings, and was later appreciated and funded by an art dealer, who rented a house in Nankai as a studio for Yang Ming, and paid him to create oil paintings according to the requirements.

At the beginning, he just found a client and gave money to subsidize it, and the studio was also rented by the client, and then the oil paintings created by Yang Ming were also sent to the designated place by the client, and the dealer went to receive them by himself.

Han Daring has also seen the paintings in the studio, and I don't know if those paintings are painted by Yang Ming. However, he doesn't know much about art, and he doesn't know much about oil painting, and he can't see whether it's good or bad.

Later, the dealer and Yang Ming met, and since then, the dealer has skipped the client and contacted Yang Ming directly, and the client has never met the dealer himself. Strangely, the client had seen Yang Ming's paintings, but they never appeared on the market.

Just when Han Dada'er was investigating the details of the art dealer, someone found a young female corpse that had been frozen and killed by cutting her throat in a puddle in the Chinese Concession, behind the British Concession!