"promise!!"

Soon, the master and servant left the secret room. Liu Zhong, following Liu Yan's instructions, began to investigate and expel the servants in the mansion, leaving Liu Yan alone sitting in the study.

Liu Yan looked at the several secret letters in his hand, then at the lit oil lamp on the table, a conflicted expression on his face.

After hesitating for a long time, Liu Yan still tucked the secret letters into his pocket and did not choose to burn them.

Although Liu Yan wasn't quite sure who was secretly watching him, he had a feeling that it was all related to these people.

In case something happens in the future, these letters will be my only means of survival.

That night, the head of the Jincheng Investigation Bureau, carrying two jade artifacts, found Cheng Yu.

"Shangguan, this was brought out by my men from Liu Yan's secret chamber...!"

As they were talking, the person in charge handed two jade artifacts to Cheng Yu.

"A jade pot from the Western Regions... it seems that Liu Yan is indeed connected with Beigong Boyu and the others!"

Looking at the jade artifact in his hand, Cheng Yu couldn't help but sneer.

In the vast city of Jin, who else could possess such an artifact besides Beigong Boyu and his group who traded in the Western Regions?

The official in charge said, "Sir, we've alerted him. Liu Yan has already driven out all the people we planted. It will be very difficult for us to investigate his crimes now..."

Cheng Yu snorted lightly: "Hmph~, that's exactly what I wanted!"

The official in charge was taken aback: "Does the superior mean...?"

Cheng Yu glanced indifferently at the person in charge: "How do you think Liu Yan was able to hide the valuables given to him by Beigong Boyu in a secret room without your knowledge?"