C1723 Giant Underground Palace(part I)

Feeling the violent vibration coming from beneath his feet, Bai Xiaohei was stunned for a moment, then he lowered his head and looked at his feet, but he couldn't see anything with just his feet on the normal rocky ground, Bai Xiaohei frowned, and then spread his mental energy downwards, a huge amount of mental energy went through the mountain and directly towards the belly of the mountain