Any cave abode that had been cultivated for a long time possessed all three: the right time, the right place, and the right people.
Most demon and monster cave abodes were connected to the surrounding earth veins and waterways.
When they sealed their cave abodes tight, one would have to sever the surrounding waterways and earth veins, turning the area into a dead land.
Otherwise, a forceful assault would waste time and effort, and might not even succeed in breaking through.
This was also why, despite the sheer number of demons and monsters across the Northern Julu Continent, the Demon-Subduing Emperor had only wiped out a few thorns in his side.
For if he truly tried to sweep through the entire continent by force, it would end in mutual destruction, and the Northern Julu Continent would become a dead land as well.
That was not a course the Demon-Subduing Emperor would choose.
His decision to launch this campaign was merely to settle accounts with some demons and monsters who had committed countless evils.
Golden Wind King had only suffered because he had been careless before, leaving his cave abode and allowing Crimson Phoenix and Azure Bird to burn it down in a single blaze.
If he had sealed himself within his cave abode, he might not necessarily have ended up like this.
But now, his demon soldiers had been captured, his cave abode burned, and he believed he had seen through the Demon-Subduing Emperor's scheme.
The fury of losing everything burned ceaselessly within him.
"Since you, Demon-Subduing Emperor, harbor such grand ambitions and mean to put the likes of us to death, then I'll fight you to the bitter end."
Having made up his mind, Golden Wind King saw that no third wave of troops was coming and cautiously emerged