C536 Volvulus

Gu Fei walked into the valley and disappeared into the dark fog, but he quickly walked out of the valley again, then stealthily hid himself in a low hill near the valley.

Because Gu Fei had sealed his body with Strength of Internal Universe, preventing even the slightest bit of his aura from leaking, even an expert of the "Emperor" realm would find it difficult to detect Gu Fei's existence