"Boom..."

A thunderous roar, as loud as a clap of thunder, suddenly echoed from the direction of the valley entrance.

Gu Yue and the man in the black robe, who were just about to exchange items, were startled by the unexpected noise. Both stopped in their tracks and quickly turned to look back.

They saw that the narrow passage at the valley entrance was now completely blocked by countless boulders that had fallen from the sky. Dust rose into the air, shrouding the entire area.