C1148 You Yun City Is on the Brink of Death!

"Do you know where the hidden power in this fog came from?"

Ye Chenfeng said indifferently, "Do you know the nature of the energy in this fog?"

Situ Yifan smiled bitterly and said, "Before I came to the Quiet Cloud City, this fog had already existed. I have been trying to find the source for hundreds of years, but unfortunately, I was unable to find it