C821 Yin Yang Reversal Formation

Buzz, buzz, buzz!

Zhan Tianming, Feng Wushuang, and Liao Qingyun passed through the gap in the formation. What entered their eyes was an empty underground world. It was similar to the limestone caves they had seen in their previous lives. However, the karst caves here were bigger and in some corners. There was an Arrays emitting a faint glow.

Clearly