Chapter 1197

Over the next two days, Jiang Yuan cooperated with Liu Jinghui and took two more cases for the police officers who came for training to practice.

The purpose of the training wasn't to solve cases or anything; it was more about teaching frontline police officers how to cooperate with units like criminal science and image investigation, how to preserve evidence, and how to expand to the maximum extent.

If one were to describe frontline police officers as infantry, units like criminal science, image investigation, and technical investigation would be equivalent to artillery, armored troops, bomber aviation troops...

Infantry is the foundation of combat, which can be used for both occupation and attack. It can be assigned independently or cooperate with other arms to launch attacks. But with the rise in the scale of war, infantry-artillery coordination, infantry-tank coordination, and ground-air coordination are the most effective.

For Jiang Yuan and Liu Jinghui now, or rather, for the current Jiang Yuan Cold Case Special Task Force and the Taihe Working Group, simple grassroots criminal police must also master various cooperation techniques. Just relying on mobile phone surveillance and DNA is definitely not going to work. At the very least, there must be complete trace collection, especially the collection of fingerprints, tools, and footprints. Secondly, even if one can't collect to the level of plant spores, knowing which evidence to preserve and giving complete records, thereby retaining the option of forensic botany, is also very important.

In addition, surveillance video, especially the collection of civilian surveillance, is also a top priority. The latter often requires the iron feet of grassroots police officers. Only by visiting more places, asking more questions, and thinking more can one collect enough surveillance video.

This training was partly skill training and partly, in fact, a live-action demonstration.

Only when everyone saw the combat effectiveness would everyone be willing to spend the effort to collect corresponding evidence. Otherwise, evidence like plant spores, if no one in the unit can solve it and Jiang Yuan doesn't help, then collecting it might be a pure waste. After all, not every unit has a criminal police officer like Pang Jidong who has a certain interest in this and also has the ability to invite corresponding professionals.

On the other hand, in the news released by Huang Qiangmin, this also became a prerequisite under the all-inclusive mode.

Don't be anxious when encountering thorny cases. It doesn't matter if you can't find Jiang Yuan for the time being. You can preserve the evidence first and organize a special task force yourself to try using traditional methods, or tactics like infantry-artillery coordination first.

If infantry-artillery coordination doesn't work, and infantry-tank coordination can't break through, then call Jiang Yuan for a set of ground-air coordination. Then the previously accumulated evidence becomes a landmark, which is conducive to Jiang Yuan bombing according to the target.

Huang Qiangmin promoted this for a few days, and criminal police officers from all over the country felt it was acceptable.

Nowadays, preserving more types and quantities of evidence is already the mainstream. Evidence like plant spores, which sounds high-end, is actually just storing textiles like clothes and bed sheets of relevant personnel. The most troublesome step is taking photos and labeling, proving the source of the clothes, and ensuring the integrity of the evidence chain.

If one has to say what is troublesome, it's that it takes up one or two more slots in the evidence cabinet. The overall cost might be the workload of a criminal science person for two or three hours. For a case that is sufficiently complex, it is definitely an acceptable upfront investment.

In contrast, collecting surveillance and various traces at the scene is a project that consumes more time and energy. However, this is already the mainstream requirement for handling cases currently. That is to say, small cases at the police station level can be simplified, but for cases with a little intensity, such as burglary, at least several criminal science personnel must go to collect traces, fingerprints, and DNA.

This also depends on the place. In some big cities, like Beijing and Shanghai, the grassroots police force configuration is sufficient, and the crime rate is relatively low. Individual jurisdictions have reached the level where if the masses lose two chickens, the police will find them back overnight. In other cities, cases that don't meet the filing standard really don't have time to be handled.

The reason for this, ordinary people might not care much, but people who commit crimes often really care. Therefore, the reverse flow of criminals will also further stimulate the vitality of the crime market...

Like the current Ningtai County, the County Bureau itself can't come up with a case of sufficient level to entertain the foreign police officers who came for training, which is somewhat a lack of hospitality.

Thus, on the evening of the last day of training, Huang Qiangmin specifically asked the cafeteria to make hot pot, roaming the whole venue, and said a lot of things to everyone.

Liu Jinghui was at the same table as Jiang Yuan, having already left the sequence of being entertained, playing reasoning games on his phone in boredom.

Wei Shiyan felt that life was flavorful as long as he didn't do math problems, but sitting beside Liu Jinghui, watching him thinking hard there, couldn't help but say helplessly: "Director Liu, you've already spent so much brainpower usually, why not rest?"

"Haven't been home recently, what's that little bit of brainpower spent?" Liu Jinghui shook his head with a smile.

After he finished speaking, he saw that several people here were looking at him with reasoning eyes.

No need to think much, Liu Jinghui could instantly outline their mind maps.

"I'm talking about spending brainpower, not what you guys are thinking." Liu Jinghui corrected.

Mu Zhiyang sat on the other side of Jiang Yuan, and from across the air came four "haha" laughs: "Director Liu is just different; going home is spending brainpower."

Wu Junhao put down his chopsticks and laughed muffledly: "Director Liu is a technical person, using technology to do things, spending brainpower is as it should be..."

"No, no!" Liu Jinghui put down his mobile game and said hurriedly: "I'll clarify first. I'm perfectly normal. I mean, going home to guess my wife's thoughts, that's the place to practice reasoning, understand?"

The people around smiled but didn't smile, pretending not to understand.

Wei Shiyan was the most uninhibited, teasing the old senior like teasing a brother, saying: "No wonder Director Liu's reasoning ability is second to none. Behind your success, there is also a powerful woman!"

This teasing, Liu Jinghui could still accept, took a breath and said: "Every bit of my success has my wife's credit. This point is beyond doubt..."

"If you could lend your sister-in-law to everyone, that would be great." Wei Shiyan didn't wait for Liu Jinghui to catch his breath and cut off: "If you lend your sister-in-law to everyone, in at most a few years, reasoning science could take root and sprout in Shannan Province!"

"Jiang Yuan." Liu Jinghui turned his head and shouted: "Tidy up your apprentice!"

Jiang Yuan looked up and glanced at Wei Shiyan.

Wei Shiyan obediently patted his face lightly with his hand and said half-jokingly: "Master, I was wrong. I was disrespectful. Please don't punish me by doing math problems; I'm already stupid."

Liu Jinghui could only smile helplessly.

Jiang Yuan was also looking at his phone. At this time, he clicked and sent two screenshots to Wei Shiyan, saying: "Perfect, you go to Beijing and bring that art gallery owner back. Chuanxing, you arrange two people to go with Wei Shiyan."

"Yes." Wang Chuanxing agreed.

Wei Shiyan asked: "Is the art gallery owner committing the theft himself?"

"Not really. It has nothing to do with this case." Jiang Yuan paused and then said: "I looked at the photos they took as evidence, and at least 3 of the signatures and seals in the paintings are problematic, which match the handwriting of this art gallery owner, indicating that he is forging and selling fakes. Just catch him while you're at it."

"Yes." Wei Shiyan immediately understood; this was just someone who was unlucky.

"Go now." Jiang Yuan raised his chin: "You should be able to catch the late-night flight now. After arriving, catch the person in the night. It's best to bring him back tomorrow. Hurry up and handle it, so that if there are any cases later, we won't have to go out again."

"Uh... yes!" Wei Shiyan knew that this counted as a punishment.

Jiang Yuan then took out his phone and said: "I'll call Cui Qishan. He is the captain of the Fourth Detachment of the Criminal Police Detachment of the Zheng Guang District Branch. Just let him send two people to go with you to take the person. I'll send a message to Director Tao later to tell him."

"Yes." Wei Shiyan clicked his tongue twice secretly.

Jiang Yuan said and first edited a text message to Tao Lu, then found Cui Qishan from his address book.

Before the call went out, Tao Lu's call came in.

"Jiang Yuan, are you coming to Beijing?" Tao Lu's words carried joy.

Jiang Yuan coughed twice, looked at Huang Qiangmin who was running all over the venue, and said: "I plan to send someone over to catch the suspect and come back..."

"A plane fell down at our flight school here. Could you help take a look?" After Tao Lu finished speaking, he emphasized his tone: "The forensic doctor says the difficulty is very high!"

(End of chapter)