Chapter 731: The Raw Material Link

Cao Xiuyuan said that in his previous experience, he has seen killers in serial murder cases undergo thinking and even methodical evolution.

In this context, for Chen Xiao and the others, it’s not particularly difficult to understand.

However, Chen Xiao later mentioned that this particular murder case was unlike any Cao Xiuyuan had encountered before.

Currently, this murder case involves overseas forces.

Although the case is currently causing significant concern, the killer’s rampant behavior has provoked the anger of the high-ups.

But if the task force manages to uncover the person using the killer as a tool, then the merits will outweigh the drawbacks!

After understanding this, Cao Xiuyuan stood up and said:

"Alright, I’ll return to the Provincial City to present the current status of the case to the relevant leadership. As for Xiaozhuang South Town, I’ll leave that to all of you!"

After saying this, Cao Xiuyuan gave Chen Xiao a firm handshake.

Chen Xiao could sense Cao Xiuyuan’s intense determination to apprehend all the suspects involved in the case.

However, Chen Xiao didn’t say anything because everyone in the task force currently shared the same sentiment.

After Cao Xiuyuan left, Chen Xiao quietly returned to his seat.

The plan was established, although it carried some elements of risk, it was one of the better options available.

Sun Zhou and Qin Fei sat down, closed their eyes, and began to meditate, not saying another word.

Soon, the entire office was left with only Chen Xiao.

He was still contemplating ways to improve the methods of evidence gathering.

At present, they were adopting a dual approach.

On the front, Cao Xiuyuan was on his way to the Provincial City, requesting the higher-ups to allow them a risky attempt.

At the back, Xiaoji and Black Cat were soon arriving at Xiaozhuang South Town, where they would trace the online trails of the weapon used.

In Chen Xiao’s view, the arrival of Xiaoji and Black Cat should bring him promising news.

Because it wasn’t Zhushan City, nor the Provincial City, just a small Xiaozhuang South Town.

In 2006, internet cafes, including illegal ones, had sprung up like mushrooms after a rain.

If it were in a big city, tracing illegal internet cafe trails would be challenging, but in a small town, it would be much simpler.

Considering Black Cat’s methods, finding something shouldn’t be an issue.

Chen Xiao’s thoughts began to shift away from Black Cat.

He pondered whether there were other ways to capture evidence aside from these two possibilities.

Cao Xiuyuan was seeking witnesses.

Xiaoji and Black Cat were searching for online traces, equivalent to physical evidence.

However, if Black Cat finds something, the possibility of the evidence being overturned seems high.

If the physical evidence is insufficient, mere witness testimony won’t stand firm in court.

Therefore, if Chen Xiao has to find another possibility for evidence, it must come from physical evidence.

Moreover, Ye Jun has already shown strong interest in Liu Dayou.

This is Chen Xiao’s bait plan for the suspect.

This plan also doesn’t have a high success rate, but based on the suspect’s profile, it’s something he would be interested in doing.

With this in mind, Chen Xiao’s thoughts were once again drawn to the word "bait."

If I were Ye Jun, when someone said those words to my face, would I be interested in copying them?

Yes, I might even subconsciously want to do it! Because he’s already displayed curiosity towards Dayou.

Moreover, with his current pride, his desire for challenge should be stronger, thus increasing the likelihood of him targeting Dayou.

But does he really not know the person holding the weapon?

This question suddenly flashed into Chen Xiao’s mind like a burst of inspiration.

Once it flashed in, Chen Xiao immediately built several walls around it, enclosing the question within.

At this moment, he realized the question’s importance!

Suppose Ye Jun is the knife in their reasoning.

Then the most crucial figure in the entire case is the person wielding Ye Jun as the knife.

However, Chen Xiao, Qin Fei, Cao Xiuyuan, and Sun Zhou have never discussed whether Ye Jun knows the wielder.

Moreover, this acquaintance has a degree.

The two must have interacted.

Whether online, by phone, or in real life.

There must have been discussions about killing Yuan Keyu between them.

Currently, Chen Xiao isn’t trying to learn the content of their discussion.

He’s pondering the degree of their interaction.

Have they met only once, and Ye Jun was firmly held in hand?

Or was it a long-term contact, where Ye Jun willingly became the knife in the hand?

The difference between them is significant; if it’s just a brief interaction, there’s no need for thought.

But if the entanglement is deep?

Such as an overseas force implanting a spy beside Ye Jun in Xiaozhuang South Town?

Also, the house owner where Yuan Keyu had an accident, Sang Yupeng and Sang Xiaoming’s father and son!

Thinking of this, Chen Xiao immediately picked up the marker on the desk and approached the whiteboard in the office.

He listed Ye Jun, the wielder, Sang Yupeng, Sang Xiaoming, all separately in their circles.

But everyone stayed within their individual circles.

Viewing those circles, Chen Xiao immediately took out his phone and dialed Qin Fei.

Captain Qin, please ask the household registration officers at the police station to investigate those with familial ties to Ye Jun, even distant relatives, and list their names!

Additionally, previous investigations on Sang Yupeng and Sang Xiaoming should include their relatives if only direct family was considered, and consolidate distant relatives too. Once completed, send all names to me.

Upon hearing, Qin Fei first acknowledged and then asked:

What are you trying to find?

I’m searching for the link! From Professor Yuan’s route to Xiaozhuang South Town and the clear target, we’ve always thought Sang Yupeng’s father and son were important suspects, yet despite their importance, we could never confirm any killing connection between them.

Furthermore, Officer Dou’s death further raises our suspicion of Ye Jun. Since Sang Yupeng’s father and son are primary suspects, and Ye Jun is also under suspicion, is there a possible familial link between them?

Qin Fei understood Chen Xiao’s intent and responded: You’re thinking if the direct familial relationship doesn’t reveal commonality, you might find connections from more distant familial ties, right?

Yes, and there’s also the reason for Professor Yuan’s visit to Xiaozhuang South Town. We now have supporting evidence to speculate that he likely came for his field’s academic pursuit, possibly to safeguard successors.

Therefore, Zhushan City was a raw material basis in their field, making it the most vital piece of information or the endpoint of the link!

I want to establish ties between all of them and the source of the raw materials through relationship analysis!