CHAPTER 1284: CHAPTER 1211: JUST RIGHT...

In the next two days, Jiang Yuan and Liu Jinghui collaborated, and used two cases to train the attending police officers.

The purpose of the training was not so much about solving cases but more about teaching frontline officers how to work with units like the Criminal Science, Image Investigation, and others, how to preserve evidence, and how to expand investigations to the maximum extent.

If frontline officers are likened to infantry, then units like Criminal Science, Image Investigation, and Technical Investigation are equivalent to artillery, armored troops, and air bombardment forces...

Infantry is the foundation of combat, capable of occupation and offense, can operate independently or coordinate offensives with other branches. But as the scale of warfare rises, coordination between infantry and artillery, infantry and tanks, and ground and air becomes the most efficient.

For the current Jiang Yuan and Liu Jinghui, or rather for the current Jiang Yuan’s Accumulated Case Team and the Taihe Working Group, mastering various coordination techniques is essential even for basic criminal police officers. Simply monitoring DNA with phones won’t cut it; at the very least, complete trace collection is necessary, especially for fingerprints, tools, and footprints. Moreover, even if unable to collect plant spores’ level of evidence, knowing which evidence to preserve and keeping thorough records to maintain the option of legal botany is crucial.

Additionally, surveillance video collection, especially civilian surveillance, is also of the utmost importance. The latter often requires the cooperation of the tireless footwork of frontline officers; only by visiting more places, asking more questions, and thinking more can enough surveillance videos be collected.

This training is partly skill-training and partly practical demonstration.

Only when everyone sees the efficiency of practical application will they be willing to exert effort to collect the corresponding evidence. Otherwise, evidence like plant spores—if no one in the unit can interpret it, and Jiang Yuan doesn’t assist—collecting it might become a mere waste. After all, not every unit has a criminal police officer like Pang Jidong who is interested and able to invite the corresponding professionals.

On the other hand, in the information Huang Qiangmin disseminated, this also became a precondition in their all-inclusive model.

Faced with a tricky case, don’t rush. If Jiang Yuan is not immediately available, you can preserve the evidence first, organize a task force and try traditional methods or strategies like infantry-artillery coordination.

If neither infantry-artillery nor infantry-tank can break through, then call Jiang Yuan for a round of ground-air coordination, turning the accumulated evidence into markers, making it easier for Jiang Yuan to conduct targeted strikes.

After a few days of such publicity by Huang Qiangmin, criminal police across various regions felt they could accept this.

These days, preserving more types and quantities of evidence is already mainstream. Evidence like plant spores sounds high-end but essentially requires storing related personnel’s clothing, bed sheets, etc. The most troublesome steps are photographing and labeling them to prove the origin of the items and ensure the chain of evidence’s integrity.

The challenging part is taking up space in one or two evidence cabinets, with the overall expense being the workload of perhaps two or three hours for a Criminal Science personnel—a justified initial investment for sufficiently complex cases.

In comparison, surveillance and various scene trace collection are more time and energy-consuming tasks, but this is now the mainstream requirement for handling cases. Only primary cases at the precinct level can be slightly simplified. Cases with a bit more intensity, like burglaries, require several Criminal Science personnel to collect traces, fingerprints, and DNA.

This also varies by location. Some big cities, like Beijing and Shanghai, have ample grassroots police allocations and relatively low crime rates. Some districts are even at the level where residents lose two chickens, and police retrieve them overnight. In other cities, they genuinely have no time for cases that don’t meet the filing standards.

The principle behind this may not matter to ordinary people, but habitual offenders truly care; hence, criminal flows in the other direction further stimulate the crime market’s vitality...

In a place like Ningtai County now, the county bureau doesn’t even have a significant enough case to host the visiting officers for training, somewhat reflecting a lack of hospitality.

Consequently, on the last evening of the training, Huang Qiangmin specially arranged for the canteen to prepare hotpot, mingling around the area and talking with everyone.

Liu Jinghui and Jiang Yuan sat together, already detached from the hosting sequence, playing a deduction game on their phones out of sheer boredom.

As long as Wei Shikan doesn’t have to solve math problems, he finds life enjoyable. But sitting beside Liu Jinghui, watching him ponder, he couldn’t help but feel exasperated, saying, "Director Liu, you already think so much daily, can’t you take a break?"

"I haven’t been home recently, so that little brainwork is nothing," Liu Jinghui smiled and shook his head.

As he finished speaking, he noticed a few people casting deductive glances his way.

Without much thought, Liu Jinghui could instantly map out their thought process.

"I was talking about brainwork, not what you guys are thinking," Liu Jinghui corrected them.

Mu Zhiyang, sitting across from Jiang Yuan, laughed aloud: "Director Liu stands apart—going home is a brain exercise."

Wu Junhao put down his chopsticks, muffling a laugh: "Director Liu engages in technical work, so using technology requires brainwork, as it should..."

"No, no!" Liu Jinghui quickly put down his phone game and said, "Let me clarify, I’m perfectly normal, okay? I mean, going home and guessing what’s on the wife’s mind is the best place to practice deduction, got it?"

The people around sported amused expressions, pretending they didn’t understand.

Wei Shikan, the most unabashed, teased the senior as if he were a close buddy: "No wonder Director Liu’s deduction ability is top-notch. Behind such success is an impressive woman!"

Such teasing was something Liu Jinghui could accept. Catching his breath, he admitted, "Every bit of my success has contributions from my wife, without a doubt..."

"If only you could lend your wife to all of us," Wei Shikan interrupted before Liu Jinghui could finish catching his breath, "If you lent your wife, within just a few years, deduction would be growing all over Shan Nan Province!"

"Jiang Yuan," Liu Jinghui turned his head and called out, "Sort out your disciple!"

Jiang Yuan looked up and glanced at Wei Shikan.

Wei Shikan, with a playful smile, gingerly patted his own cheek and half-jokingly said, "Master, I was wrong, I was impudent, don’t punish me with math problems, I’ll go dumb."

Liu Jinghui could only smile helplessly.

Jiang Yuan, who was also on his phone, tapped it a few times and sent two screenshots to Wei Shikan, saying, "Just in time, go to Beijing, and bring back that gallery owner. Chuanxing, you arrange for two people to accompany Wei Shikan."

"Got it," Wang Chuanxing agreed.

Wei Shikan asked, "Is the gallery owner embezzling art?"

"Not quite. It’s unrelated to this case," Jiang Yuan paused before continuing, "I noticed in their evidence photos, at least three paintings have signature or seal issues corresponding with this gallery owner’s handwriting, indicating he faked the price, so we might as well arrest him."

"Understood," Wei Shikan understood immediately, acknowledging it was just bad luck for the owner.

"You should head off now," Jiang Yuan gestured with his chin, "You should still make it for the late flight. Once there, arrest him at night, and if all goes well, bring him back by tomorrow. Get it done quickly, so we won’t be out again when another case comes up."

"Uh... got it!" Wei Shikan realized this was indeed the punishment.

Jiang Yuan then took out his phone, saying, "I’ll give Cui Qishan a call. He’s the captain of the fourth squad of the Criminal Police Team at Zhengguang District Branch Bureau. Have him send two people to help you detain the person. I’ll text Tao Lu later about this."

"Yes." Wei Shikan discreetly clicked his tongue twice.

As Jiang Yuan spoke, he firstly texted Tao Lu and then began searching his contacts for Cui Qishan.

Before he could dial out, a call came in from Tao Lu.

"Jiang Yuan, coming to Beijing?" Tao Lu’s words were filled with delight.

Jiang Yuan coughed twice, glancing at Huang Qiangmin scurrying around the venue, responding, "I’m planning to send someone over, just to nab a suspect and return..."

"A plane from our local flight school just crashed. Could you help take a look?" Tao Lu said, then emphasized, "Even the forensic doctor stated it’s highly challenging!"