C3673 The Potential of the Big Rock.

Gu Xuan's current strength was already at the absolute peak of the Fifth Calamity Stage.

A slightly weaker Fifth Calamity Stage cultivator was not even his match.

The 'Devil Realm Expert' that he spoke of was naturally not referring to the Fourth Calamity Stage cultivators of the Devil Realm, but to the two Fifth Calamity Stage cultivators of the devil realm