Medicine Valley, Chen Xun and Black Bull were gathered around a dirt pit, their eyes fixed on the flickering flames within.

It's worth noting that there was no wind inside the cave abode, yet a gentle breeze had somehow arisen here.

"Bull, you're a peerless genius. Truly, if the heavens hadn't birthed me, Bull Emperor, the world would be in eternal darkness!"

Chen Xun shook his head in amazement, glancing at the formation stones in the three corners of the cave. "This formation is truly wondrous. It can harness spiritual qi to resonate with the heavens and earth, achieving various effects."