The formation of a Heavenly Devil Domain required certain special prerequisites.
There was no need to say more. The swamp was inhabited by spirit beasts, with no Human Race living there, which was unfavorable to the expansion of a Heavenly Devil Domain.
A Heavenly Devil Domain might appear in a sparsely populated place. After all, it would be easily exposed in a densely inhabited area.
But its subsequent development would inevitably head toward human society.
One harsh fact was that spirit beasts were not ideal targets for Heavenly Demon invasion.
It was not that there were no demonized spirit beasts; there were even demonized beast hordes. But comparatively speaking, demonizing the Human Race was easier.
Spirit beasts thought too simply and lacked all those messy distracting thoughts, making invasion far too inefficient for Heavenly Demons.
Ji Xiaohua therefore concluded that the Heavenly Devil Domain had not expanded too far yet, but they could not delay any longer.
When Qu Jianlei arrived at the outskirts of the Heavenly Devil Domain, he saw quite a few cultivator teams.
These teams were stationed around the area, carrying detectors and Laser Weapons as they investigated the edges of the demonic domain in groups.
There were quite a lot of teams, but they appeared orderly. Each had at least two Golden Core Realm cultivators leading them, and none dared to advance rashly.
Many teams even stayed thirty to fifty kilometers from the edge of the Heavenly Devil Domain, with every sort of defense fully deployed.
Their approach was simple: caution upon caution.
Seeing Qu Jianlei watching those people, Ji Xiaohua said with a wry smile, "Many of them came here just to get accustomed to it..."
Quite a few Heavenly Demons had now appeared in Dongsheng, but let alone invasion, even infiltration was not widespread.