The Library

12:15 PM.

Despite the grandeur of the apprehension operation, for the vast city of Jinling, the minor disruption quickly settled down. In front of Jinling Station, it seemed as if nothing had ever happened. However, for Kang Shuwei at this moment, everything appeared so surreal. He even wished that all of this could happen again, so that next time he could see through it earlier.

Standing on the square in the noon sun, he sighed deeply before walking towards Ye Gaoyi, who was waiting for him.

"Ye Bro, I'm sorry."

He said with a somewhat melancholic tone.

Hearing his words, Ye Gaoyi was taken aback.

"What's wrong with you?"

Kang Shuwei continued, "Take me back to the Aerospace University. There are still a few loose ends I need to confirm."

Perplexed by Kang Shuwei's words, Ye Gaoyi quickly followed after him as he walked away.

"Back to the Aerospace University? Why? What about Li Xuan?"

Kang Shuwei's voice remained low, "Li Xuan didn't escape from the station..."

"We..."

"Fell for it."

Hearing this, Ye Gaoyi's heart skipped a beat.

"Fell for it!?"

"How...?"

He understood why Kang Shuwei was apologizing, but he wasn't concerned about whether they had been deceived or not. For him, even tracing Li Xuan's trail was an unexpected delight. He wasn't blaming anyone; he just shifted the focus of the conversation back to Li Xuan.

"Where did he go? If he didn't leave the station, where could he have gone?"

"Why not just bring him back?"

Kang Shuwei sighed bitterly and shook his head, "There's no time."

"I can't face requesting any more resources..."

"Let's go back to the university."

Hearing him say that, Ye Gaoyi understood that the operation had failed again.

However, he couldn't comprehend why Kang Shuwei's analysis in the principal's office earlier hadn't been accurate enough. After all, Li Xuan had left the school after making preparations... And with physical evidence and witnesses, if they had fallen for a trap, which part of the plan had gone wrong?

September 20th, 1:10 PM.

The commercial van returned to the Jinling Aerospace University once again.

Although Kang Shuwei had said that not everyone needed to accompany them, Ye Gaoyi was the only one who joined him.

Nevertheless, everyone boarded the van, and even Tao Xiaoyi, who had gone to the airport with Tai Ba, was back with the team.

Everyone was filled with resentment and dissatisfaction. What had their efforts in the past few days truly yielded?

During the hour-long journey, Kang Shuwei slept in his seat. He only woke up when he heard Ye Gaoyi calling his name.

"Are we there?"

"We are."

He opened the car door, and the aerospace university now appeared as it had before, as if the tense atmosphere of the morning had never existed.

"Let's go to the library first."

"If you have questions, we'll discuss them on the way."

Naturally, the road to the library was not accessible by vehicle. The seven of them got off the van and walked towards the library.

Ye Gaoyi was most curious. As soon as they got off the van, he asked, "If Li Xuan didn't leave the station, where did he go?"

Kang Shuwei seemed to want to answer but then changed his mind and said, "Let's confirm that later."

"I still need one final clue."

Sun Ting immediately followed up with a question, "Why go to the library? If it's about borrowing records, we can check those ourselves."

Kang Shuwei nodded, but didn't explain. The implication was... they'd know once they got there. The intense excitement that had consumed his face for nearly three days had disappeared at this moment, replaced by an indifferent calm. This event had undoubtedly taken a significant toll on him.

Walking behind Kang Shuwei, the others saw that he had no intention of speaking further, so they refrained from asking more questions. However, their minds were still brimming with speculations about where Li Xuan might have disappeared to.

Kang Shuwei pushed open the door and walked in. He showed his identification to the librarian and said, "I want to check the books Lin Yi has borrowed recently."

The elderly librarian nodded and handed over the list of borrowed books by "Lin Yi."

"University Physics," "Advanced Mathematics," "Linear Algebra," "Advanced Mechanics," "A Brief Overview of Aerodynamics," "Introductory Exploration of Aeronautical Dynamics"...

As those standing behind Kang Shuwei saw the list of books, they began to understand something. No wonder Gu Hanxue had acknowledged Li Xuan's teaching quality. It seemed that he had invested a lot of effort into this matter, which explained why his disguise was so convincing.

But what was the substantial connection to the clues?

Looking at the list of books, Kang Shuwei's brows furrowed. It seemed to deviate from his expectations.

However, he soon understood and sighed, "Can I take a look at these books?"

Before he could say more, a student walked in from behind them. The student's pace was brisk, but his expression was far from pleasant. He approached the administration office, slammed the book onto the table, and exclaimed, "Grandpa, what's going on?"

"Who changed the book covers?"

Hearing this, Kang Shuwei's eyes lit up. The books, as well as the keywords continuously appearing in his mind, became clearer. Everything began to fit together.

"I see."

He stopped the librarian, who had just stood up to retrieve the book, and said, "No need to fetch it."

"But I advise you to inspect these books. Perhaps..."

"You'll find some problems."

After finishing his sentence, Kang Shuwei turned and left the library. This left the rest of the task force members in the library, exchanging bewildered looks.

Sun Ting stood beside Ye Gaoyi and whispered, "What's going on?"

Ye Gaoyi shook his head, indicating that he wasn't quite sure either. However, he approached the table and picked up the book that the student had left on the table.

The cover of the book bore the title "Principles of Flight," yet upon flipping through the pages, it turned out to be "University Physics."

In that moment, they suddenly realized something. Ye Gaoyi's prior confusion was swiftly replaced by understanding. And as this realization struck him like a heavy blow, his brain seemed to have been hit by a massive hammer.

All of a sudden, his hand holding the book froze in place, and he himself stood rooted to the spot. The expression on his face alone conveyed that he had been profoundly impacted.

Dong Yang grew anxious and asked, "What's going on, Ye Bro? Xiao Ting?"

"Did you figure something out?"