Obviously, the sharp-sensed Pei An vaguely detected the subtle changes in Zishang's aura.
If Pei An had known that a remnant soul, suspected to be that of a Martial Emperor powerhouse, was lurking within Zishang, and that this remnant soul could temporarily possess him and grant him strength four levels higher than usual, perhaps he wouldn't have been puzzled.
Whoosh!
Chapter 817