National Forensic Doctor
Chapter 1239 - 1167 Reasonable

Chapter 1239: Chapter 1167 Reasonable

In various investigation directions, since Jiang Yuan chose to track the driver himself, investigating his escape direction and identity is the most critical.

Jiang Yuan and Liu Jinghui exchanged a glance, lightly coughed, and said, "Firstly, we judge that the perpetrator is most likely planning to escape across the border."

Liu Jinghui supplemented next to him: "The perpetrator clearly knew his target and prepared adequately. Since he decided to flee rather than surrender, basically his only option is to escape out of the country."

"And it needs to be fast," Jiang Yuan added, then continued, "We investigated some checkpoints and surveillance post-event, where you can see the perpetrator rode his motorcycle onto the highway and soon left the surveillance area; the chosen route was very targeted and likely pre-prepared. When discussing the escape route, there are only a few paths for crossing the national border. The direction the perpetrator rode aligns with the Northeast. That’s one point."

The director nodded. Even though the direction of escape is subject to scrutiny, it can be discussed later. He didn’t prepare to delve into specific criminal investigation issues.

Jiang Yuan continued, "Secondly, observing the perpetrator’s attire..."

Jiang Yuan took out a photo, showing the perpetrator riding a mountain motorcycle along a highway.

Numerous detectives standing behind the director immediately moved forward, curious to see the photograph.

There were so many photos provided on-site, and time was tight; most people hadn’t seen them all, or they glanced too quickly, unable to process them mentally.

The director, who used to be a police officer, carefully watched the photo Jiang Yuan presented, examining it closely, his eyes brightening as he asked, "Is it because of the boots? These are winter boots, right?"

Liu Jinghui quickly said, "The director has keen eyesight; the boots he wore are indeed unsuitable for the current climate in Changyang City."

The director glowed with self-satisfaction, humbly remarking, "Could he be considering a thick layer for riding at dawn?"

"Way too thick, these are the same as found on Taobao, lined with fleece, specifically made for severe weather below minus 30 degrees, while Changyang City’s nights only drop to a few degrees below zero." Jiang Yuan pulled out another photo and added, "We can also add the customers of sellers providing such boots to the investigation list."

The director nodded in satisfaction, "This certainly can be considered."

"Moreover, you can see on his motorcycle that he carries a backpack with outdoor tents and sleeping bags visible outside. This photo shows the tent and sleeping bag as special cold-resistant versions. Given the same cross-border route, if heading southwest or southeast, you wouldn’t need these items as it’s too hot and heavy, and the motorcycle has limited carrying capacity, rendering such preparations unnecessary."

The director reacted swiftly, drawing inferences: "So, wearing the boots beforehand was also to lighten the load. Cold-resistant boots are too bulky."

"Exactly," Jiang Yuan nodded, "He needs to carry money, possibly weapons; already it’s quite heavy with outdoor gear and clothes on the motorcycle. If too much is loaded, the off-road capability of the mountain motorcycle will greatly decrease."

"Even so, if truly heading to the Northeast, his motorcycle would be useless. Snow sleds would be more suitable for snowy terrains," a detective from the back spoke up, unable to hold back upon hearing this. This involves deciding the criminal investigation direction, a matter of utmost caution.

Liu Jinghui continued, "There are two possibilities here. One is the perpetrator also being unaware of Northeast’s conditions, simply preparing these things as a matter of course. Another possibility is that he prepares to switch vehicles after entering Northeast territory. It aligns realistically, as if riding a mountain motorcycle into Northeast, it would take at least two to three days, possibly four or five days. By then, local search intensity should have dropped significantly. If he’s prepared with other identification, he might even use public transport."

"Makes sense," the director synchronized with Liu Jinghui’s thought process, nodding involuntarily.

Jiang Yuan continued, "The third point..."

"There’s a third point?" The director was amused amidst his surprise.

"The third point is judged based on footprints, mainly as a reference." Jiang Yuan said this, then routinely displayed several footprints photos that seemed similar to the audience before saying, "Through footprint identification, I estimate the perpetrator belongs most likely to the Northeast Asian ethnic group, northeast. Domestically, this group primarily consists of Northeast Han genes, Shandong Peninsula Han, and some North China inland and Northwest Han."

Jiang Yuan clarified: "Simply put, the perpetrator’s ancestry likely belongs to Northeast, Shandong, or with lesser probability North China or Northwest. Thus, he may be familiar with Northeast’s environment or may originally hail from there. If aiming to cross borders, regardless if his footprints fall in Northeast, Shandong, or Northwest North China, exiting Russia via Northeast is the safer route."

Though attending numerous reports, the director remained deeply shocked this time: "Rarely have I heard such English and academic vocabulary during a case analysis meeting."

"I am a forensic doctor," Jiang Yuan chuckled slightly.

The director laughed too, "You call this a reference?"

"After all, the perpetrator’s ancestry cannot directly determine his escape route. For now, the priority is gathering forces and retrieving surveillance based on his movement direction." Jiang Yuan didn’t elaborate further on techniques. His Level 5 footprint analysis, despite calling in numerous strong criminal investigation teams on-site, was unmatched.

Moreover, even the few domestic footprint experts capable of reaching Level 5 aren’t necessarily skilled at analyzing ethnicity through footprints. Jiang Yuan’s Level 5 is comprehensive. Thus, from an unconventional angle, he could directly provide an answer without needing discussion.

The director didn’t just encourage a few words as before but decided, "So, Jiang Yuan, I want you to take charge of investigations heading Northeast. If I recall, you’re skilled at image investigation?"

"In image investigation, I’m proficient at trajectory analysis and image enhancement, plus I understand some technical surveillance and monitoring technology," Jiang Yuan openly stated his expertise. His image investigation trajectory analysis was Level 6, though limited to trajectory analysis, unlike the comprehensive footprint analysis.

Jiang Yuan presumed, the director likely desires him to collaborate with other detective teams offering technical support.

He had no objections, as he regularly resolved issues for external specialists. Especially from police stations of often "exchanged" regions, uncertain queries were sent over for convenient answers, receiving responses consistently.

Criminal investigation technology and ordinary technology share similarities, both being straightforward for knowledgeable ones, challenging for those without proficiency. Like a math problem, a slightly skilled one might struggle for hours or days, whereas learning from scratch with research might take weeks or months, yet for those completing preliminary learning, it may just take minutes; if facing several hours or longer, the problem’s difficulty soars.

Jiang Yuan’s casual remarks sounded somewhat intimidating to other detective teams.

If a youngster casually declares their expertise in various areas, they would likely face subtle mockery or straightforward ridicule. But Jiang Yuan’s case-solving reputation, variety of stories, had already spread wide.

He handled multiple cases in Lanyue City recently, utilizing numerous image investigation techniques, due to Lanyue having movie studios and being part of a major case series. These cases were highly watched both within and outside the industry; everyone present was aware.

Concerning Jiang Yuan’s footprint identification abilities, detailed explanations weren’t required. Many cases already validated them significantly, a good third of the police teams present had applied them.

This made Jiang Yuan’s response not appear boastful at all but entirely straightforward self-assertion.

"Good, good, good." The director, using a tone of appreciation, said, "In image investigation, you must participate actively, especially when they face difficulties, help resolve them positively. No matter which team catches the perpetrator, you’ll earn credit."

It was a clear promise.

Jiang Yuan stood at attention, responding in a respectful manner with full emotional intelligence.

At this moment, the director suddenly turned his head, saying, "Old Ge, what do you say?"