C551 Paleozoic correlation?

"Down?"

Bai Yanqiu was stunned, then said: "My martial spirit has sensed that there is something below, but there is no entrance, so how do we go down?"

Ye Wusheng asked: "Did you talk about the approximate location of the auspicious sign?"

Bai Yanqiu replied: "Yes."

The three of them arrived at a place in the valley that was filled with blackstone. At a glance, there were only rocks here