C762 Heavenly Cold Evil Spirit Formation

After listening to Mu Xiao's suggestion, Lu Feng started to analyze the seal on Gu Ni's body.

"Hmm?"

Suddenly, Lu Feng paused for a moment, and then he started to observe carefully again.

"Why does this seal feel so familiar?" Lu Feng muttered.

It was fine that the Qi of the seal was familiar, but now, even the entire seal seemed familiar. This was obviously not normal