The man with his back turned to me calmly responded to the other person's questioning:

"That is Cheng Yangli's real tomb. If it were to be investigated, I can't guarantee your safety."

The man with a fierce expression, however, smiled with a hint of amusement:

"Oh, so you're so certain that it is Cheng Yangli's real tomb?"

The other person sensed that there was more to his words and asked him seriously what he meant.

"We've been cooperating for so long, I won't hide it from you," the man with the fierce expression said.

"A few weeks ago, our men dug up a tomb and brought out an ancient book.

"Those who understand the field have read it and said it was written by a mechanical sorcerer from the Liang Dynasty.

"And he wrote a secret in the book."

His gaze was cunning, and he spoke slowly:

"About the authenticity of the forty-nine tombs of Cheng Yangli."

The man with his back turned suddenly trembled and asked the other person:

"What do you want?"

The man with the fierce expression replied, "A tomb that's over a thousand years old."

He nodded eagerly, "Alright, deal."

After the two reached an agreement, they left one after another.

Meanwhile, that afternoon, under the guise of an interview, I visited all the departments of the Archaeological Institute.

I tried to identify the mole who had made the deal with the man with the fierce expression through their voice and appearance.

As luck would have it, I eventually found him.

However, I never expected that the location would be the director's office.

The man in front of me had a slightly aged appearance.

The wrinkled striped shirt had almost faded to white.

He had a friendly and amiable demeanor.

But I wouldn't mistake him, whether it was his voice, physical posture, or attire.

He was undoubtedly the man with his back turned on the rooftop.

In front of his neatly arranged desk, there was a nameplate.

His name and position were written on it: Zhang Yiyuan (Director).