C436 Bone Melting Yin Wind

In the canyon, the black evil wind kept sweeping everything around it. Perhaps those reckless cultivators didn't know how powerful this evil wind was, they rushed inside with all their might. In the end, all that was left was a piece of human skin swaying in the air.

"This is. . . Bone Transformation Yin Wind?" A cultivator shouted loudly. He looked extremely shocked. After all