C393 Mysterious Bone Piece

This voice was like thunder, it resounded in the dark cell, giving Ding Yi a fright. He was originally thinking about the lab since he came in, so he didn't notice that the two sides of the iron prison were not sealed, but separated by iron pillars that were as thick as an arm.

At this moment, the clanging of iron chains could be heard from his right, followed by the muffled sound of thunder