Jiu Province, the most fruitful land within the Primal Chaos Realm, is also the most central territory occupied by the Human Clan.
Strictly speaking, the territory of Jiu Province is the true domain of the Great Yin Imperial Dynasty. Beyond Jiu Province, the thirty-six Territories are mostly governed remotely, with the Great Yin Imperial Dynasty and the various Great Grotto Heavens Blessed Lands, Masters of the Deities, sharing rule.
However, within Jiu Province, the Great Yin Imperial Dynasty possesses absolute control rights.
After enduring the Great Schism for tens of thousands of years, the prolonged era of Spirit Energy depletion and the imperfection of rules led to a significant shrinkage of the Primal Chaos Realm's territories, no longer as vast as the grand world at its peak.