"Shua—"

Du Fei's figure shot directly towards the ruined building ahead. Between glimpses, he could see hundreds of people surrounding a rather peculiar red stone door in front of him. The stone door was embedded in the cliff, and the cliff was as smooth as a mirror, looking as if it had been sliced off by someone.

And this stone door appeared below the cliff. Above the door, there was a faint, strange fluctuation emanating. Clearly, there were some unique ...