The most famous area near the Endless Sea in the current world is the Nephite Realm, which, like the current world, is considered a rather complete and profound world.
Apart from the Nephite Realm, there are several other worlds of similar essence, but they have been severely eroded by the Abyss.
These worlds might have been similar to the current world and the Nephite Realm at some point, but ultimately they couldn't withstand it and could no longer proceed with 'farming' methods step by step.
The Worlds' Wills have begun to give up, only focusing on a few key projects, such as providing Dao Marks for living beings so they don't get lost in the Abyss.
And the living beings within have evolved into a sort of 'nomadic' groups, constantly playing hide and seek with the Abyssal corrosion inside the world, being driven everywhere.
