The Immortal Plane, the East Continent.
The Celestial Court governed the most abundant and prosperous regions in the Immortal Plane. There were four regions, and the East Continent was one of them.
East Continent, Western Ridge, Southern Domain, Northern Territory.
These four regions were extremely large. Ordinary Immortals could possibly travel back and forth throughout their lifetime.
Other than these four core regions, other worlds were affiliated with the Immortal Plane. Worlds like the Human World were all ruled by the Celestial Court.
At its peak, the Celestial Court almost ruled the entire Immortal Plane. However, it slowly declined. Now only these four regions remained.
However, the four regions weren't peaceful either. Many regions were in chaos. The rule of the Celestial Court had declined a lot and couldn't control such a large area.
