C931 The Palace of Darkness

"What pure dark energy!"

Zhang Yishan was startled when he heard Qin Ming's call. When he lowered his head and looked at the canyon below, he couldn't help but feel shocked. Such a pure dark energy was definitely the rarest in the world.

The purer the dark energy, the more beneficial it would be to his Cultivation Level. The dark energy was the mortal enemy of light