Chapter 527: Return

"Not cooing... not gurgling..."

The birds outside the window called with extreme order, and there seemed to be a sweet taste in the air. The green radish by the bed woke up like a dream, the leaves were green, as if trembling slightly.

Jiang Yuan woke up naturally, rolled in the quilt, and didn't want to get up for a while.

Until the bird calls disappeared, Jiang Yuan got up lazily and went downstairs for breakfast.

Breakfast was still fragrant beef soup.

The chef recognized Jiang Yuan, and his attitude was even more kind, which made people feel more regretful.

"Here." Huang Qiangmin arrived earlier. Seeing Jiang Yuan, he beckoned.

"Director Huang." Jiang Yuan sat down with the soup.

"I'll go back first today." Huang Qiangmin was in a good mood, smiled and said, "The motorcade has to be brought back. It doesn't feel safe to stay here. I'll also go back to handle recent work by the way."

Huang Qiangmin specifically explained his itinerary to Jiang Yuan.

Jiang Yuan said "Have a smooth journey" and asked, "Then I will continue to do cases in Luojin next?"

"Yes, as you like. Anyway, it's one case per discussion now. Just tell me in advance." Huang Qiangmin smiled.

The package has a discount, so there is no need for it now.

Huang Qiangmin has seen many police stations in various places and used Jiang Yuan's leaders. Afterwards, they only miss him.

Fast and accurate case solving, a large amount of objective evidence, a perfect chain of evidence, and a style that is not sloppy at all are Jiang Yuan's advantages in criminal investigation.

In the current environment, only Jiang Yuan picks people, no need to worry about not being able to sell at a price.

"However... the Haidilao cook case here has not been investigated yet. Are you opening a new case?" Huang Qiangmin was also a little worried.

He was not worried that the case could not be solved, but worried that in the process of solving the case, the pressure Jiang Yuan endured would become greater and greater.

Yesterday's investigation was loud and small, and the suspects brought back for interrogation were basically cleared of suspicion, making the investigation of the case enter a period of self-doubt.

Reasonably speaking, the first day's investigation is the most hopeful for results. If no clues were found on the first day, the days ahead would be even harder.

Jiang Yuan recalled the photos of the crime scene, and the scene he had seen on the spot later—the bloodstains had been cleaned up, and the group rental room was full of people again, including the single room where people died, which was also occupied by a young man full of blood—no matter from which angle you look at it, the probability of an acquaintance committing the crime is extremely high.

"Currently, there are no other clues and evidence. Persisting in investigation should be the most reasonable plan." Jiang Yuan shook his head.

Cold murder cases should not have easy cases.

This truth, the leaders of the Luojin City Bureau, should also understand. However, the truth is this truth, and the payment in reality is also really to be paid.

Mapping to everyone's work and study, if you read and study non-stop every day, constantly increase pressure, constantly invest, and then tell you that there will be a harvest in the end, but every time you take an exam, your score does not rise, and your ranking does not improve, then how many people can persist?

The only thing that loves air force forever is the fishing guy. Ordinary people still need feedback.

"If you open a new case, Luojin City will do the investigation, and they won't have manpower for you." Huang Qiangmin was mainly worried about this.

Jiang Yuan naturally thought about it and said, "Preliminary investigation should not use many people. If manpower is needed later, I want to transfer the people from the cold case team over."

The people in his cold case team are mostly borrowed, and they are scattered in several places to handle cases, which is to do the finishing work for the previous cases—solving the case is only the preamble of a case, and the files organized later are enough to annoy ordinary people. After sending for inspection and then to the litigation stage, there is always a lack of people to cooperate.

The most critical thing is that many of Jiang Yuan's cases are aimed at the death penalty, and such cases, criminal suspects basically have to fight the second instance, even if only to delay time, they will make this choice.

And from the second instance to the death penalty approval period, there are easy cases and annoying cases.

But in any case, the main work of criminal police is aimed at solving cases, and the police in Jiang Yuan's cold case team are even more so.

Huang Qiangmin didn't care, nodded and said, "Just use it if you can. Tell me if there is any new situation in the case. Luojin City is the same. Don't promise them other conditions. There are many cases in the Ministry, no need to stay in Luojin for too long. They are almost empty."

The resources of a police station are limited, and no station can solve murder cases non-stop. Moreover, solving cases also requires the support of various departments. In the current environment, just the criminal police team fighting alone is definitely not going to work.

Jiang Yuan is engaged in technology, and in the final analysis, he eats resources. Especially evidence like micro-evidence, in the Ningtai County Bureau of the past, don't even think about it. Even if it is taken to a provincial capital city like Changyang or Luojin, it is not very easy.

Jiang Yuan has solved three major cases for Luojin City, and the Luojin City Bureau is also under pressure.

After drinking two bowls of beef soup, Jiang Yuan went downstairs to send Huang Qiangmin to the car and watched the motorcade of more than ten cars leave one after another.

This time, the leaders of the Luojin City Bureau did not see him off, acting as if they didn't know Huang Qiangmin was leaving.

Huang Qiangmin didn't care about this. He escorted the supplies back this time and would definitely return, which was equivalent to leaving temporarily.

Jiang Yuan called Captain Pang Jidong and took his car to the funeral home.

913 drowning case.

This is a murder case Jiang Yuan chose for Captain Pang Jidong.

Drowning can be said to be the most extensive and common application of forensic botany.

Because drowning is always accompanied by water accumulation in the victim's lungs. And in the water, not only are there plankton, but there are always algae.

Sometimes, even just simple contact with water bodies will contaminate the algae components in it. Even crime scenes with water, such as ponds and swimming pools, have various algae.

These can all be used as evidence.

Solving cases through algae evidence has been applied for many years in modern criminal investigation and belongs to the early application of forensic botany. To Jiang Yuan, it feels very suitable for Captain Pang Jidong's introductory education.

Several people arrived at the funeral home, first checking the lung samples left before.

The original forensic doctor had already done a good job, not only doing stomach contents and lungs, but also bone marrow samples.

This belongs to professional behavior. Because if the victim died of drowning, he would usually inhale or swallow some water violently, and natural water bodies inevitably contain diatoms. Diatoms are smaller than ordinary algae and will enter various organs in the human body, including bone marrow, with the blood.

In addition, if the victim is dead and the heart stops beating, diatoms will not be transported to various organs in the human body. Thus, in the internal organs, no diatoms will be found, or only a very small amount of diatoms will be found. The latter is because of the existence of diatomaceous earth, leading to some toothpaste, or metal polishing and other environments having contact with diatoms.

In short, when a large number of diatoms are found in the internal organs, the deceased died of drowning. And because of the high closure of bone marrow, the proof power of bone marrow is the strongest, and the problem of diatomaceous earth is eliminated.

In other words, there are diatoms in the bone marrow, and this person died of drowning. This is the gold standard for drowning in forensic medicine.

Not only that, the diatom community in the bone marrow is also consistent with the diatom community in the drowning water area. Slightly less, but the main species are basically consistent.

Yes, like pollen profiles, algae don't play alone. A single algae is difficult to prove anything. Algae communities or diatom communities have higher proof power.

"Not bad, not bad." Jiang Yuan looked at the algae evidence preserved in the container, extremely satisfied.

The label of the bottle records the case number, the name of the deceased, the date and place of sampling, as well as the evidence number and other information.

"General forensic doctors won't be so troublesome." Jiang Yuan pointed to the extraction bottle of algae in the bone marrow.

"I am also quite interested in forensic botany." Lu Jie, the forensic doctor in Luojin City, said hurriedly.

He is because he understands a little, so he is more diligent to Jiang Yuan.

"Is it difficult to take diatoms in bone marrow?" Jiang Yuan asked with a smile.

"En, it was dissolved with strong acid, and it was quite dangerous." Lu Jie also nodded with a smile.

Captain Pang Jidong saw that everyone was laughing very happily, and couldn't help but laugh, "Looking at it this way, this case will be easier to do?"

"Of course not." Jiang Yuan still smiled and said, "The previous evidence was done very perfectly, indicating that it is very difficult to solve the case through the original evidence. And the evidence was taken very well, indicating that it is not easy to find new evidence." ===== CHAPTER 528 =====