The Northern Territory, one of the border regions of the Great Thousand World.
Of course, this so-called far northern border was not the true boundary of the Great Thousand World, but the border between the myriad races of the Great Thousand World and the Outer Realm Evil Race.
Back then, the Immortal Emperor paid with his life to ultimately seal the supreme leader of the Outer Realm Evil Race: the Heavenly Evil God.
Although this successfully curbed the Outer Realm Evil Race's offensive, they could not be driven out. The Outer Realm Evil Race still occupied roughly half of the Great Thousand World's territory.
Furthermore, the evil race polluted those territories with Demonic Energy, turning them into Demon Realms. Thus, they truly gained a foothold within the Great Thousand World and gradually encroached upon it.
The stalemate between the Great Thousand World and the Demon Realms formed a substance much like a World Membrane, separating the two worlds.
The east, south, west, and north were all like this, each with its own borderlands.
When living beings of the Great Thousand World entered a Demon Realm, they would be suppressed by its will and laws. Their strength would be affected, and their consumed energy could not be replenished.
Likewise, when the evil demons entered the Great Thousand World, they would also suffer suppression and rejection from the will of the Great Thousand World.
Yet powerful Demon Emperors could still tear through the World Membrane and send the Demon Race under their command into the Great Thousand World.
As a result, every thousand years, they would brew a monstrous Blood Calamity to weaken the Great Thousand World's living forces.
Otherwise, with the accumulation of tens of thousands of years, the Great Thousand World would surely have far more experts than it did