Chapter 735: Two Tears

Traces are a crucial area of study in forensic science.

Although in solving cases, it's a common thing to do.

But, in the eyes of true trace experts, there's more than just blood stains, footprints, fingerprints, movement of objects, etc.

A true trace expert links these traces to the psychology of the person who left them.

The statement by Qin Fei, "He turned back," was exactly the result Chen Xiao deduced through those traces.

However, just the statement "He turned back" isn't the real focus.

Chen Xiao pointed to the last footprint left by the murderer at the crime scene and said, "Look at the trace in this circle, can you tell what it suggests?"

"He turned back, and more than once, there's a high probability he stood here for a long time," Qin Fei gave his opinion.

Chen Xiao nodded, but before he could say anything, Qin Fei already thought of a previous situation:

"Could it be that he picked up Ye Jun's phone at this moment and sent the alarm text?"

Chen Xiao glanced at him and smiled, "Think carefully about the traces around Ye Jun."

With this reminder, even though Qin Fei was not originally skilled in trace observation, he quickly found the point in his memory.

"It still has to be you, I thought I had looked very closely just now, but I didn't remember every footprint and its deeper meaning."

Chen Xiao was not bothered by this and said after standing up:

"Next to Ye Jun, there are footprints from pacing around, these could be left when he was making the call."

"As for what we're seeing now, it's what he left standing in the final moments. He turned back, and not just once or twice."

"The most important thing is, look at these two small spots, what do you think caused them?"

Chen Xiao pointed to two irregular circles left on the wall not far from the footprints.

Seeing these two points, Qin Fei's eyes instinctively lit up, but then he quickly showed confusion and couldn't help but mutter:

"It can't be, it's impossible, right?"

Watching Qin Fei mutter with a shocked expression, Chen Xiao calmly asked:

"Who did you think of?"

"I, I thought of... Ye Changhuai! These two points, should be caused by uncontrollable tears falling into his hands and flung onto the wall."

Qin Fei shared his thoughts.

Chen Xiao gave him a thumbs-up: "Very likely him, but it could also be someone else."

"In our interactions with Ye Jun, maybe his academic performance wasn't great, but he's a very smart person."

"And now from the traces, I can see that the person who killed him was in no hurry to leave and may have even cried, which naturally suggests Ye Jun's family."

"His real relatives are only two: his father and his mother. But his mother is mentally unstable, and the footprints at the scene indicate a man's footprints."

"So between the two, Ye Changhuai is more reasonable."

"But why do I say not limited to Ye Changhuai? Because we don't fully understand the other relationships Ye Jun has, regarding his academics."

Qin Fei suddenly understood and nodded repeatedly:

"Indeed, any relationship related to the deceased needs to be linked! Beyond family, there's also his school!"

"Yes, this case has become clear now, it's an assassination by foreign forces targeting Professor Yuan Keyu. But their choice of assassination methods created significant difficulty in forensic terms."

"This kind of assassination makes people initially think it's a murder case, hiding their true intent more effectively."

"Foreign forces, using Ye Jun as a disposable tool, and the one wielding the knife could be from Ye Jun's circle of relationships... ."

Chen Xiao spoke, then stared intently at Ye Jun and said:

"The killer mistakenly believed that killing him would protect all secrets. Unfortunately, the most fatal mistake was left when killing Ye Jun."

Qin Fei thought for a moment, then said, "I'll call my colleagues stationed in Xiaozhuang South Town right away, have them find Ye Changhuai and confirm his whereabouts tonight. If he's not in Xiaozhuang South Town, then he's likely involved!"

Chen Xiao didn't say anything, but nodded to express his approval of Qin Fei's approach.

Soon, Qin Fei went to make the call.

But just as Qin Fei took out his phone, Chen Xiao suddenly stopped him:

"Wait, I'm going back."

"You're going back?"

"Yes, by now more information should have been sent regarding Ye Jun's circle of relationships, I've examined the body and memorized what I could see at the scene, staying in Zhushan City doesn't help much."

"Rather than staying here, it's better to wait for them halfway!"

"How to wait?"

"Although the distance between Zhushan and Xiaozhuang South Town isn't far, the arrival still takes time. Ye Jun is Ye Changhuai's son, as the police knowing his death, we have an obligation to inform him!"

Qin Fei quickly agreed, "I understand, the quickest way from Xiaozhuang South Town to Zhushan City is via the highway. If we don't see him at the highway entrance, it means he's definitely not in Xiaozhuang South Town."

"Even if he ultimately claims he came from another road, what father would deliberately choose another route upon hearing the news of his child's death?"

Chen Xiao replied, "I'll set off now, then call Ye Changhuai from the highway exit, confirm his location, and determine whether he is truly in Xiaozhuang South Town based on the time."

"Additionally, whether I see Ye Changhuai or not, I'll leave Zhushan at a reasonable time and return to Xiaozhuang South Town. Returning to Xiaozhuang South Town is equally important."

Qin Fei was puzzled, "Why? What if the relationship information doesn't include any suspects?"

"Information is just one part, an even more crucial point is, another person may not come to Zhushan City first. Ye Changhuai and Luo Mei have a deep bond, if a man learns of his only son's death, he might not inform his wife immediately."

"Especially since his wife is already mentally unstable and extremely fond of Ye Jun! So what we need to do is track both of their movements!"

After speaking, Chen Xiao sighed deeply:

"If someone else committed the crime, then we can only continue investigating slowly without any shortcuts!"

Leaving these words, Chen Xiao did not stay at the crime scene.

He immediately took the keys from Qin Fei and headed straight for the highway exit!