Chapter 236: Low-Temperature Burn

Since forensic expert Zhai came to Qinghe City, he had constantly heard the name Jiang Yuan.

Just in terms of solving cases, the number of cases Jiang Yuan had solved in the recent period was indeed a bit large.

Successively solving major and important cases was an experience that ordinary criminal investigation personnel dreamed of but found difficult to experience.

Individual third-class merits in the police system were relatively easy to get, but the difficulty of second-class merits was quite high. Jiang Yuan had taken two second-class merits in a row, which could explain that what he did was something most police personnel couldn't do.

Forensic expert Zhai hadn't done it either.

He was appointed to the provincial department, which had reasons for his qualifications and academic background, as well as the reason that his technical mastery was relatively comprehensive.

When he was transferred to the provincial department 30 years ago, forensic expert Zhai was one of the few professional forensic experts in the province who had graduated from a proper medical university and had experience.

On the other hand, in the era when forensic expert Zhai's combat power was exploding, let alone things like surveillance video or DNA technology, fingerprints were checked using fingerprint cards, and the efficiency was extremely low.

Forensic appraisal was the technical force that could truly be called forensic science at that time. Forensic expert Zhai, on one hand, cooperated with criminal police to solve many cases, and on the other hand, also self-taught extremely many techniques.

Unlike current forensic experts, many of whom revolved around forensic clinical medicine, in forensic expert Cheng's era, forensic anthropology belonged to daily life, and forensic toxicology and even forensic entomology had to be dabbled in.

Because there was nowhere to seek help.

Current forensic experts, when encountering some techniques they didn't understand, directly sought help from others.

This was a mode that forensic experts of that era couldn't do or even think of.

But on the other hand, forensic expert Zhai's technical learning was also very hard. It wasn't like now, where one could easily find learning resources if one wanted to learn something.

In those years, even high-level technical personnel within the system couldn't get whatever materials they wanted to get.

Despite this, forensic expert Zhai's strength was still extremely strong.

In recent years, he still had gains whenever he made a move.

Three years of high-level experience, for killers who were mainly novices, could be said to be a dimensionality reduction strike.

However, today's corpse autopsy difficulty was extremely high, and the top had the intention of letting him wait for Jiang Yuan. Now that he saw the person, forensic expert Zhai deliberately observed him.

Jiang Yuan couldn't think of that much, so he operated step by step. The autopsy process didn't show anything special either.

Forensic expert Zhai wasn't surprised. After the corpse was sent over, he had carefully checked it once, and also couldn't come up with any effective conclusions.

It could only be said that the ordinary corpse and the superb technique were definitely not done by a novice.

"Should we start boiling the corpse?" Jiang Yuan looked at the corpse and looked at forensic expert Zhai.

"Any thoughts?" Forensic expert Zhai was also worried that Jiang Yuan was young and vigorous, setting himself up.

Jiang Yuan shook his head and said: "No direct thoughts, as for the killer, the technique is very proficient."

"En, it's not the first time committing a crime." Forensic expert Cheng immediately gave affirmation.

This thought was very close to his.

And people always couldn't help but agree with the views that were the same as their own.

"Compared to that killer in the reservoir case?" Forensic expert Niu only played support on the side, but still associated it with Wang Guoshan for the first time.

The two cases weren't merged, but because of Liu Jinghui, everyone actually knew that these two cases had commonalities.

Jiang Yuan said steadily: "Definitely not the same person. Both are very proficient."

Forensic expert Zhai said "En" again in agreement, and said: "People who kill have relatively few opportunities for training. Whether killing a few people or killing more than ten people, there isn't necessarily a big improvement in killing technique; it mainly depends on talent."

Forensic expert Niu was stunned, then shook his head and said: "Only you can say this."

"In the past, there were actually those who killed particularly many, especially the fierce bandits before liberation, who committed crimes again later." Forensic expert Zhai shook his head, didn't want to chat much more, and pulled back the previous words, saying: "Then let's start boiling."

"I'll set up the pot for you. When the bones are boiled out later, I'll have to rely on you to look at them." Forensic expert Niu didn't admit his inadequacy with any shame when facing forensic expert Zhai.

His qualifications were much deeper than Jiang Yuan's. Thinking back then, when he was still in the jurisdiction, Jiang Yuan might not have possessed this function.

However, compared to forensic expert Zhai, his qualifications had nothing to say.

Speaking of which, when forensic expert Niu first joined the job, he had also attended forensic expert Zhai's training class.

This autopsy room could be considered forensic expert Niu's territory. He called two other people, actively took out the commercial pressure cooker and the steel pot, the former used electricity, the latter used gas. The two exerted force to set them on the stove and started a fire to boil water.

A normal person always weighed over a hundred jin. The corpse dug out this time, although rotten and changed beyond recognition, the skeleton was there, so the small pot definitely couldn't boil it.

The electric pressure cooker used a commercial 16-liter one, which could barely boil a normal person's thigh bone, but if the height was over 1.85 meters, like Jiang Yuan, one could only use the steel pot beside it to boil.

The latter's volume wasn't big enough either, but one could boil one end and then boil the other end. It was slow, but it could always be boiled to the point of being deboned.

Boiling two people in one go, this workload was even greater than boiling two sheep or even four sheep.

Several forensic experts got busy together, and it took a long time to straighten it out.

Forensic expert Zhai was also actively helping.

Being a forensic expert was like this; no matter how high the level, one had to do things as usual.

Busy completing the preparatory work, watching both pots boil, forensic expert Zhai turned his head back and saw Jiang Yuan lift the corpse bag onto another autopsy table, looking like he was studying it seriously.

Forensic expert Zhai frowned and walked over to ask: "Any discoveries?"

"These corpse bags seem to have discoloration." Jiang Yuan was flipping through the outermost travel bag.

"Was it poked through?" Forensic expert Niu put down the clamp and walked over to look.

"There is a slight cut mark on the outer layer, but it's not mainly here." Jiang Yuan flipped the inside of the two layers of corpse bags and said: "Look, in order to transport the corpse, the killer first dismembered the corpse, cut it into a plastic bag, then put the plastic bag into a red and blue plaid bag, and finally put the red and blue plaid bag into a gray travel bag."

"At that time, when people packed meat and put it in the refrigerator, they packed it like this." Forensic expert Zhai explained with experience.

Jiang Yuan nodded and added: "But the discoloration of this bag is more likely caused by scorching."

"Eh?" Forensic expert Zhai walked over unexpectedly.

Sure enough, a corner of the red and blue plaid woven bag indeed had discoloration.

Even in the outermost gray travel bag, there were red and blue marks.

This definitely couldn't be caused by contamination.

Forensic expert Zhai thought carefully; this really looked a bit like a mark caused by scorching.

"A plastic bag burns, it should be gone." Forensic expert Zhai muttered to himself.

"Indeed."

Jiang Yuan also muttered.

Forensic expert Niu watched the two thinking hard on the side and suddenly felt a bit lazy to think.

Other than the corpse, what he studied a bit was things like paper towels; plastic bags or rubber or something, were still disgusting.

At this time, in Jiang Yuan's mind, Dazhuang's dislike of riding in a car suddenly flashed, and then the scene he scanned when he went up to the parking lot, so he said: "It's a motorcycle."

"What?"

"This travel bag and the red and blue plaid bag can't withstand high temperatures, so it's a low-temperature burn. The motorcycle's exhaust pipe!"

Jiang Yuan said this, and there was a big reason, which was that there were some motorcycle traces in the parking lot near the mine tunnel, but few car traces.

Zifeng Town locals, although there were many families with cars, when locals went up the mountain, more of them rode motorcycles.

Motorcycles were also a more popular means of transport than private cars.

Jiang Yuan used the autopsy bed as a stool, turned the red and blue plaid bag horizontally, and let the heated end hang down, saying: "Look, if a motorcycle was transporting a corpse up the mountain, this end of the bag could have touched the exhaust pipe."

"The temperature of the exhaust pipe shouldn't be very low either, right?" Forensic expert Zhai was a bit uncertain.

"Hmm... a motorcycle with a relatively low exhaust pipe temperature?" Jiang Yuan wasn't too familiar with this aspect either.

Forensic expert Cheng looked at the two bags containing the corpses, fiddled with the position himself, and said uncertainly: "I don't understand motorcycles either, does anyone understand?"

The forensic experts on the scene shook their heads one after another.

Forensic experts studying clothes or toilet paper was a work requirement; what did riding a motorcycle count as?

"Then let's find a few motorcycles and try." Jiang Yuan said.

"Do an experiment?" Forensic expert Zhai was also in favor.

When forensic experts did analysis other than corpses, they often needed to do experiments. For example, guessing that the killer transported the corpse in a suitcase, then finding a colleague with a slightly larger height and weight to sleep in the suitcase was a very necessary thing.

However, the source of the motorcycle made forensic expert Zhai think for a long time before saying: "It's best to find a local leader to ask, see if we can find a second-hand motorcycle dealer, coordinate, and try a few more cars."

Jiang Yuan was stunned, then agreed: "That works too. Good."

Forensic expert Zhai found it strange: "How did you originally want to try?"

"Buy?" Jiang Yuan said: "A motorcycle shouldn't cost much money."

Forensic expert Zhai laughed, then looked at Jiang Yuan not laughing, and couldn't help saying: "Is the county bureau's funding so sufficient now?"

"Let the bureau buy it?" Jiang Yuan couldn't help nodding: "That works too. Good." ===== CHAPTER 237 =====