Qing Chen glanced at Cai Shu, who was standing next to him. Only then did Lu Yin notice the elegant, middle-aged man standing slightly behind Qing Chen.

Cai Shu smiled and introduced himself. "I am Cai Shu, the supervisor’s eldest disciple."

Lu Yin bowed again. "Junior Long Qi greets Senior Cai Shu."

Cai Shu nodded. "I summoned you here at this time because an interrogator’s report mentioned the Guan brothers. Specifically…"

Lu Yin naturally knew the reason why he had been called, as he had been the one to leak the information.

After Cai Shu finished his explanation, Lu Yin frowned as he put on an appearance of carefully recalling the past.

Qing Chen was in no hurry, so he simply waited. This was a very important matter as they could not afford to abandon any potential clues related to uncovering more Redbacks, not to mention when it concerned the recruiter who had persuaded the three Guan brothers to turn traitor. Their recruiter had to be someone with a very impressive status, and all of humanity would benefit from exposing such a person.

Lu Yin carefully went through his memories, and as he did so, his expression kept changing. After the time it took to burn a stick of incense, he said, "This junior remembers that there was a slate with something recorded on it, but it crumbled to powder after I merely glanced at it. So, I can’t really remember what was on it."

Cai Shu’s expression grew incredibly...