Sure enough, there was no wall behind the waterfall, and he slipped right inside.
Ji Chaoyang, Silver King, and Keke had already entered when he picked up the purple-level crystal.
Silver King and Keke went through the waterfall, and Keke was soaking wet. The two beasts shook off the water at the entrance, splashing it all over Xu Xin's face.
Xu Xin rubbed Keke's wet head and stood up from the ground.
As he stood, he staggered and almost fell.
"...Iron?"
The ground was a smooth iron surface, very slippery when wet, causing Xu Xin to almost slip without noticing.
Behind him, soothing yet powerfully piercing white light penetrated through the thinner part of the waterfall, illuminating the entire room clearly.
"This room..." Xu Xin's expression changed.
He had expected an underground cave like the Water Curtain Cave, but instead, it was an iron room!
