The "Black Death Secret Realm" is located in the Lion Barbarian Mountain Range in the southwest of Golden Lion Country. This mountain range is a habitat for demon beasts, among which there are even Tier Six Demon King level beings.
However, in this Land of the Far West, the influence of human cultivators is strong. Even if it is a Tier Six Demon King, unless a cultivator intrudes into its core territory or lair, it will not easily deal with cultivators entering the mountain range to hunt demon beasts.
Of course, human cultivators can't overdo it either. For instance, if a Golden Core Stage cultivator enters the Lion Barbarian Mountain Range and starts a slaughter of demon beasts below Tier Five, that is something the Tier Six Demon Kings absolutely cannot tolerate.
If any Golden Core Stage cultivator does this, even Nascent Soul Stage cultivators can't protect him.
