Chapter 174

After talking with Captain Lei Xin for a while and smoking almost an entire pack of cigarettes, the forensic doctors tidied themselves up and continued the autopsy.

Lei Xin originally had the intention to help, but seeing there was no room, he stood on the side, found a footstool to stand on, and continued to watch.

Cao Keyang then had a companion, and they stood together.

A corpse that has been burned by arson is not the same as a normal autopsy.

In a normal autopsy, if only a part is done, it can be dissected in two or three hours; a slightly more complicated one might take four or five hours.

However, for a corpse that has been burned, the information that can be obtained is really too little, so it must be dissected with relative care.

Lei Xin coming over specifically also had this intention in mind.

The physical evidence left at the scene was close to zero, and what could be used might really be zero.

And although the corpse was burned beyond recognition, it could still leave behind a little something.

Lei Xin now hoped that the cause of asphyxiation was poisoning; if the type of poison could be determined because of this, it would be a very good physical evidence lead.

Jiang Yuan retreated to the secondary position again, but was still searching very diligently.

Niu Tong, who was a forensic doctor for the district bureau, was even more serious in his attitude; after checking the abdominal and pelvic cavities, he examined the limbs inch by inch.

Everyone knew in their hearts that what they could hope for now was some small discovery.

Jiang Yuan had a tall stature, and soon his waist became sore from bending over. Just as he straightened up to stretch, he saw a bright, glittering light cluster slide out from the corpse's chest cavity.

Jiang Yuan looked left and right, reached out, and took the light cluster.

Zhang Ying's Legacy—Trendy Clothing Style (LV2):

The kaleidoscopic nature of the big city and the ebb and flow of trends gave Zhang Ying, who came from a small place, a violent shock. Those beautiful clothes, those that could represent personality, culture, and art, tempted Zhang Ying time and time again, making her linger and forget to return.

Beautiful clothing also gave Zhang Ying unprecedented confidence. There was a period of time when she caught the tail end of pop culture and had some audience who knew how to appreciate and admire her.

Although Zhang Ying, having returned to the small city, had gradually lost her sensitivity to fashion, in Qinghe City, she was still a top-tier trendsetter.

LV2 is a high-level professional talent in a city; Zhang Ying's legacy seemed to be on the higher end of LV2.

However, where could a skill like "Trendy Clothing Style" be used?

To judge her identity and background based on the corpse's clothing?

With a turn of thought, Jiang Yuan looked at the corpse again.

The charred, curled corpse, which had been naked before being burned, was also quite sigh-inducing.

It wasn't until dawn that the autopsy was completely finished.

Niu Tong still had to write the autopsy report, while Wang Lan, Jiang Yuan, Cao Keyang, and Lei Xin took a car and left first to rest.

To be precise, the first three rested, while Captain Lei Xin continued to go elsewhere to boost morale.

The next day at noon.

Jiang Yuan woke up from his sleep, estimated that all the reports should be out, and then packed up and headed to the criminal investigation team.

He had changed into brand-new clothes.

It was still the bright and clean police uniform, the suit set, which already looked very handsome and upright.

Although he had a new skill, Jiang Yuan didn't want to change too much.

Upon entering the main gate, Jiang Yuan felt a thick, heavy atmosphere.

Just like smoked old bacon; you smell it and you know what you're eating today.

And the expressions and actions of the police officers around him conveyed to Jiang Yuan that the case hadn't been solved, the difficulty remained, and the leads were cut off.

Entering the office, the atmosphere remained the same. Several police officers who looked like old bacon were gathered together, discussing in low voices, and they probably weren't talking about trivial matters like garlic sprouts.

"Wu Wu Fa Yi Wang, Wu Wu Fa Yi Niu." Jiang Yuan came to the desk in the corner; this was a relatively flexible workstation, meant for criminal investigators like Wang Lan who came to support from other places.

"Jiang Yuan." Wang Lan nodded. Her gaze was still sharp, but slightly fatigued.

For a person in their forties, staying up late continuously was probably something they couldn't handle either.

However, police officers are all like this, especially those in the criminal investigation team; once they participate in major and important cases, stomach medicine is a must-have.

Jiang Yuan asked: "Are the toxicology results out? Is there anything?"

"None of the common poisons," Niu Tong replied.

Toxicology testing is done in batches.

Usually, checking for arsenic means checking for arsenic, and checking for tetramine means checking for tetramine; there is no machine that you can put a sample into and have it spit out results with a click.

For simpler ones, like testing for cyanide, you can use picric acid test paper; the specific process... is about the same as a content in a high school chemistry lab class.

As for solid-phase extraction, liquid-phase extraction, etc., they each have their own complexities.

Therefore, the lack of results from toxicology testing doesn't mean the deceased definitely wasn't poisoned; it just means it tested negative for common poisons.

For the relatively famous Fudan poisoning case, one had to separately perform a check for dimethylnitrosamine, and only when it tested positive could the type of poison be determined. And there are estimated to be 600,000 similar chemicals that are highly toxic to humans.

Jiang Yuan nodded slightly and said: "So we still have to go through interpersonal relationships?"

In a situation where physical evidence is close to zero, one can only use the old methods of old criminal investigators.

It's no wonder several old criminal investigators were discussing with solemn and excited expressions.

Wang Lan just said "Um," and added: "The ideal state is a crime of passion caused by things like romantic relationships. If that's the case, the difficulty lies in the interrogation—seeing if they confess in the absence of physical evidence."

"Exactly." Jiang Yuan and Niu Tong nodded in unison.

"If it was a murder turned from burglary or robbery, then it's troublesome."

"Indeed."

These were all the most direct deductions, with no difficulty, but the conclusions drawn were a bit hard for people to accept.

Jiang Yuan couldn't help but ask: "Are there no cameras around? A little further away, at the intersection, that would also work."

"The urban village here is quite complicated; even if there are cameras, they are all broken," Wu Wu Fa Yi Wang said.

Jiang Yuan understood and didn't have the heart to criticize the public security management problems of another city; this kind of problem in urban villages was already common, so he thought about going back and getting more cameras for Jiang Village.

Random crimes are always a difficult point. The reason why theft and robbery are difficult to solve is because of their strong randomness. Stealing from anyone is fine, robbing anyone is fine, so the ways to solve the case are very limited.

The Zhang Ying case is the same; if it's a random crime, then next, one must focus on serial connections.

If it cannot be connected to other cases, relying solely on the evidence of this case is not only insufficient to convict, but also insufficient to solve.

The air pressure in the office was relatively low, which was also for this reason.

When a case is completely uncontrollable, the mood of the police responsible for solving it won't be good either.

Several old criminal investigators soon finished talking and went out.

After a while, Lei Xin entered the large office.

After some greetings, Lei Xin came to the corner where the three forensic doctors were, greeted them, and updated them on the latest situation, saying:

"Zhang Ying's social relationships are quite complicated; she knew quite a few people."

Wu Wu Fa Yi Wang Lan asked: "Does she have a boyfriend?"

Lei Xin didn't keep them in suspense and said: "Her hometown arranged a fiancé for her, and they gave a bride price of 188,000. He even came to Qinghe City to work this year. I heard the two had some conflicts; Zhang Ying didn't like the other party, and the man came to the shopping mall to find Zhang Ying several times. This is suspect number one, and our people have already gone to find him."

"Suspect number two is Zhang Ying's leader; the relationship was ambiguous, but he has a family. We brought him in, but he doesn't look like the one."

"This relationship doesn't go that far... Are there any others?"

Wang Lan stared at Lei Xin and asked.

"Zhang Ying's appearance was outstanding, she knew how to dress, was a bit strong-willed, didn't get along very well with colleagues, and had argued with customers, but it wasn't very serious. She also had a dispute with a courier because of a delivery, and the person compensated her several hundred."

Lei Xin was overwhelmed; these were all normal social interactions and weren't special.

He looked at Jiang Yuan, who never came back empty-handed, and Lei Xin said in a good-tempered way: "Does Wu Wu Fa Yi Jiang have time to take a look at the scene?"

He was holding onto the thought of being able to filter out a few leads if possible.

Jiang Yuan agreed immediately.

He had finished the autopsy he most wanted to do, but the case wasn't over, so he should still help where he could.

Lei Xin hurriedly expressed his gratitude and then left in a hurry.

Jiang Yuan then called Wu Wu Fa Yi Wang Lan and specifically called a criminal investigator to go to the crime scene together.

After truly experiencing the situation of a killer returning to the crime scene, Jiang Yuan didn't dare to take it lightly anymore.

Even with two technicians together, he didn't feel it was very safe.

When investigating a crime scene, technicians are fully focused on the ground or objects, and if someone comes from behind, they won't notice at all.

Two technicians working together doesn't have a very high safety factor.

But having a non-technical police officer is much better; even if they are at the door scrolling through short videos on their phone, it's still more secure than having an extra technician.

The self-built house after the fire was dirty and black.

The roof beam had collapsed in the center of the room, and the broken walls and ruins looked as if they had experienced war.

"The person who most wants to kill someone now is probably this landlord," the accompanying criminal investigator walked to the courtyard entrance and didn't want to go in anymore.

The so-called collapsed house—the self-built house after being burned, starting from the outer door, had nowhere to step.

There were a few bored people at the door, peeking and looking around, and they wouldn't leave even after being driven away twice.

It wasn't until the criminal investigator took out a notebook to record their ID card information that the few people hurriedly left.

Jiang Yuan and Wang Lan put on masks, specifically put on shoe covers, and went inside a little bit to investigate.

Two hours later, Jiang Yuan basically announced he was giving up.

No fingerprints or bloodstains could be found at the scene after the fire, and there were no footprints either; it really wasn't that the investigation team hadn't worked hard.

Even trace evidence couldn't be found in this kind of environment.

Not only would biological samples denature, but common fibers and the like couldn't be preserved either. Even metals could be oxidized.

"We can only see if we can find clues from the physical evidence taken from the ignition point," Jiang Yuan took some physical evidence, but wasn't very confident.

Just as he walked out the door and was taking off his gloves, the police officer at the door walked in quickly.

"Slow down, slow down, you're kicking up the dust," Wang Lan hurriedly shouted, and asked: "Any new news?"

"There's a lead from Zhang Ying's hometown," the police officer replied, also a bit excited: "It turns out her family had arranged another marriage, asking for a bride price of 288,000. Before the previous one was returned, when our people went, the three families were just arguing."