Chapter 513: Refining Oneself

rue essence to touch the gray qi, but whether it was the true essence of Shi Dan or Jin Dan, once it entered the gray qi, it was swallowed up, like a stone sinking into the sea, without any reaction.J...scene came into view, everything inside the Sky Tower was normal.Qin Sang secretly let out a breath of relief, and immediately spread his wings without hesitation, but he didn't rush to release the tw...