The two no longer spoke and slowly walked further in.
Zhao Changhe paid close attention to the corridor's stone walls on both sides, feeling they must have been carved out many, many years ago, not a recent endeavor, but probably not as far back as the previous epoch either.
Sisi was also observing. She seemed to know more than Zhao Changhe about these matters. As she looked, she frowned, "This was dug out nearly a hundred years ago. There are also signs of expansion. The digging has continued over the years, showing that the Lu Family has always been exploring the secrets here. Maybe they started since the founding of their lineage, a legacy of exploration."
Zhao Changhe was stunned, "How come I didn't see any fresh marks?"
"Here." Sisi reached out and tapped a corner of the wall to her right, then gave it a gentle push. To Zhao Changhe's surprise, he found that this section of the wall could actually be pushed open...
