"It is quite simple, for the cultivators in this realm have no idea that an outside world even exists. Although some powerhouses have attempted to probe beyond the Wuchen Realm, they were all blocked by a powerful barrier, which, in their eyes, is the very end of the world," the Void Wanderer replied.
"Could the barrier they encountered be the same natural barrier that I broke through earlier?" Lin Fei asked.
"Yes. In fact, this natural barrier seals the entire Wuchen Realm. The spot you probed and breached was likely just a very hidden and rare loophole or a weak point in that world-shaping barrier."
Chapter 1363