The boundary between the Fengyang Realm and the Biyu Realm was a vast celestial abyss. Myriad years ago, supreme powerhouses of the Biyu Realm, joining forces with top experts from several surrounding realms, had reinforced an existing natural abyss to block the invasion of the Grey Mist.
Three successive barriers stood around the abyss.
With a single glance, Ning Chen could see that these barriers were connected to countless formations, constantly supplying energy to maintain their operation and ensure they remained effective at all times.
Chapter 530