Huang Qiangming didn't go anywhere, he followed Jiang Yuan, collecting trace evidence at the crime scene, then climbed up the building to collect trace evidence from the fall scene.

He didn't do any work or speak, he just followed Jiang Yuan and watched him work.

Wu Jun and other experienced criminal police officers watched Huang Qiangming's figure and gradually felt the pressure increase.

Huang Qiangming is a detective with ideals.

Although it is a bit sentimental to describe a middle-aged man in his forties or fifties as having ideals, this word is occasionally used in the police force.

If there were no ideals, the position of the captain of the criminal police brigade would be very painful, both mentally and physically.

At this moment, Huang Qiangming actually could have handled the suicide case first after receiving the mobile phone video evidence.

Because it is not only suspected of suicide, there is already solid evidence proving that it is a suicide case.

If there is evidence later proving it to be a homicide, it is just a matter of restarting the case. Both options are legally valid.

If there is no ideal and only consider secular gains and losses, closing the case is the most normal decision.

And it is also the most advantageous decision.

Because if this case is not a suicide, it is either a high IQ crime or the killer has extremely good luck and the victim has extremely bad luck.

No matter which one, the difficulty of solving the case is extremely high.

And if it cannot be solved, all the hard work done in Lin County and Lin City this year, all the cases solved, would be in vain.

If the case cannot be solved, even if 300 points are deducted, giving a passing evaluation would be a great convenience for the bureau.

But Huang Qiangming's ideal country does not allow him to do this.

So, in the eyes of several experienced criminal police officers, Huang Qiangming is almost recklessly waiting for Jiang Yuan to collect evidence.

"Huang Team, why don't we go back and discuss it first?" a police officer suggested.

Handling a case is a serious matter, and whether to establish a case or initiate an investigation is not a decision that the captain of the criminal police brigade can make alone.

And by now, if Huang Qiangming doesn't make a decision, the director and the deputy director in charge of criminal investigation should also appear.

A high fall is considered an unnatural death. But if the situation is complicated, the director and the deputy director will also come as usual.

At that time, Huang Qiangming will have to make a decision and report to the director.

Huang Qiangming naturally understood the meaning below, but he looked at Jiang Yuan and said, "You guys go to the opposite building again, go to every office, and get the surveillance videos in the public rest areas. The same goes for the Wanghe Building, all the offices on the higher floors must be checked."

This means that he wants to establish a case.

The police officers below saw Huang Qiangming's resolute attitude and stopped talking, one by one turning around and getting to work.

Anyway, if the sky falls, there will be someone to support it.

Huang Qiangming took out his mobile phone again, sent several messages, and continued to follow Jiang Yuan's footsteps.

In terms of the number of cases solved, Jiang Yuan has solved more cases than a whole squadron of police officers.

If the time frame is narrowed down, the number of cases solved by the criminal police brigade in Ningtai County in the past 10 years must be more, but in the past five years, there are no cases solved by Jiang Yuan.

Jiang Yuan has this kind of ability, and other people may still hesitate because of his age and experience. Huang Qiangming, however, has witnessed it all.

He has experienced the DNA craze in 2003.

At that time, the ministry had just started promoting DNA, what were the results?

Many police stations could solve a case every week. DNA evidence, such as in rape cases, was particularly easy to obtain, averaging one case per day.

Many serial rapists were caught because of this.

When technological innovation just broke out, the power it demonstrated was enough to astonish anyone and make them believe in the impact of reality.

In Huang Qiangming's opinion, Jiang Yuan's technical ability is explosive, at least in Ningtai County.

If this case turns out to be a suicide, then so be it.

If it is really a high IQ crime, Huang Qiangming believes that Jiang Yuan's ability can teach him how to be a better person.

"Huang Team, the director is here," a police officer came to report.

Huang Qiangming glanced back at Jiang Yuan, saw that he was still focused on collecting evidence at the scene, and then turned and went to the door.

At the scene, Director Guan Xi and the deputy director in charge of criminal investigation arrived.

"What's the situation?" Guan Xi asked as soon as they met, wanting to understand the situation at the scene first.

"A 27-year-old male named Li Jiangshu. Death from a high fall. Based on the information we have collected so far, he worked at a travel company in Wanghe Building, a private company..." Huang Qiangming spoke quickly but also briefly.

Guan Xi listened attentively and then asked, "What about the cause of death?"

"It's not certain yet," Huang Qiangming replied, and added, "There is video footage showing that Li Jiangshu jumped from the window alone. But we believe there are doubts."

"What doubts?" Guan Xi asked directly.

Huang Qiangming was silent for two seconds and said, "I'm also waiting for the report."

"Okay..." Guan Xi actually had his own sources of information. Seeing that Huang Qiangming didn't say anything, he smiled and asked, "Suggested by Jiang Yuan?"

"Yes."

"You really trust him."

"I have no choice but to trust him," Huang Qiangming smiled bitterly.

Guan Xi was taken aback, but then he also smiled.

As a leader himself, he suddenly understood Huang Qiangming's mentality.

In fact, to put it simply, Huang Qiangming is a Chinese language teacher and is invigilating a math exam. At this time, the top student in the class points out that there is an error in the third question on the math paper, and none of the options A, B, C, or D are correct.

Although it is a relatively low probability event, can you not report it?

You can't understand it yourself, so you have to wait for the top student or for more information from above, right?"Let's proceed as per the case then." The pressure on Director Guan Xi was actually less than that on Huang Qiangming.

Huang Qiangming was responsible for all the criminal cases in the county. The detection of murder cases was his responsibility, as were the eight major types of serious cases, and the overall case-solving rate in the county.

But for the director, his most important responsibility was to maintain stability.

Since Huang Qiangming had decided to support Jiang Yuan, Guan Xi accepted it and helped him further streamline the relationships.

Huang Qiangming showed his gratitude and said, "Then we will expand the investigation first. If we can confirm it's a murder, we will file the case..."

Setting aside the judgment of whether it was suicide or homicide, this case was simply a case of falling from a height.

Even if it was a murder case, everyone had dealt with many such cases.

The police officers of the Criminal Police Brigade quickly sprang into action.

Those who needed to be questioned were questioned, those who needed to record statements did so, and those who didn't have time to do so took down phone numbers, took photos, and would do it later.

Three squads were dispatched, facing four large buildings and a circle of skirt buildings, they quickly disappeared without a trace.

Jiang Yuan was focused on collecting physical evidence, oblivious to the outside world.

He didn't even know what he had collected. Modern technology hadn't developed to the point where there were various micro-evidence detectors at hand.

However, like Huang Qiangming, he also had a slight realization that he might be facing a windmill, or a fully armored strong enemy.

The so-called high IQ crimes are actually rare in the domestic criminal investigation environment.

Guys like Tan Yong were already very meticulous criminals.

And like the silver case guy, the complexity of the case was at most sixty or seventy points. He was full of flaws, but he just couldn't be caught.

But from another perspective, if a person premeditates a crime, they must think carefully and prepare adequately.

Although most criminals think in a laughable way, so much so that they are caught in the rookie stage.

But are there people who escape by luck in the first or second premeditated crime, thus gaining experience and continuing to commit crimes?

Perhaps, the real problem lies in the fact that very few people are caught.

Jiang Yuan didn't have much criminal investigation experience.

If he were to evaluate his own criminal investigation skills, LV0.5 would be a very high evaluation.

If you add in the ability to arrest and handle cases, LV0.3 can't be more. In this respect, he was basically useless.

But Jiang Yuan knew that any criminal, even a real high IQ criminal, would find it very difficult to clean up the scene.

Especially in public places. The more time you spend, the more information you leave behind.

The classic Locard's principle speaks to this: the process of crime is actually a process of material exchange. The criminal, as a material entity, always comes into contact and exchanges with various material entities during the crime...

Crimes will inevitably produce physical evidence. If no trace evidence left by the criminal is found during the crime scene investigation, it only means that no trace evidence has been found, not that there is no trace evidence at the scene.

Jiang Yuan's crime scene investigation ability was very strong, and for this reason, he was more willing to use a comprehensive inspection to prove the nature of the case.

Rather than making a conclusion at this point.

Wu Jun finished his work and followed Jiang Yuan, soon his neck was bloodless from looking down.

Seeing Jiang Yuan scrubbing the scene of the fall vigorously, Wu Jun said, "How about I take the body to the funeral home first?"

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"Okay, I'll follow later." Jiang Yuan only responded once, and then buried his head and scrubbed again.

Wu Jun coughed twice, had no choice but to ask Huang Qiangming for a burly policeman, and left together.

Jiang Yuan scrubbed until it was dark, and when most of the people in the building had left, he left the scene.

When leaving, Jiang Yuan and the accompanying policeman walked into the elevator. The corridor lights went out one by one because there was no one, only the yellow light in the fire exit was on, which looked quite creepy.