Just as there are various differences among people, worlds naturally have their own significant differences.
In all honesty, Lu Yuan has not personally encountered many small worlds; there were only the Nine Provinces realm and the Heiyuan secret realm he previously explored.
Especially the latter, which is actually no longer a small world, but a secret realm captured by the Immortal Realm.
This kind of secret realm has already lost the Great Tao unique to small worlds. Without its core support, it has already been assimilated by the Immortal Realm.
Although it retains the body of a world, in essence, there's little difference between it and the Region Continents inside the Immortal Realm.
Thus, after its emergence, the secret realm is quickly integrated and becomes part of the Immortal Realm.
As for worlds that have died, capturing their secret realms, how much of their former world's grace they retain is really hard to say.
