An invasion? They simply could not withstand it.
Even if they casually sent a single powerful expert into the Land of Shining Stars—even a Great Dao Realm expert at Great Dao Perfection—
that person would probably vanish completely in an instant, without anyone in the Land of Shining Stars noticing.
Even if he appeared right before someone's eyes, they would not be able to see him.
Because he was inherently false, they naturally could not see him. Moreover, he would vanish incredibly quickly, leaving them no time to notice anything.
Therefore, they absolutely had to rely on the Illusory Realm's power of reality.
The Illusory Realm naturally possessed the power of reality as well. If it had not expanded too excessively, it could have continued existing on the strength of that power.
But now, the little power of reality the Illusory Realm possessed was no longer enough to sustain its continued expansion.
And that power of reality within the Illusory Realm was those systems.
Created through special means, they allowed everyone who obtained a system to exist in the Land of Shining Stars.
But the Illusory Realm possessed far too little power of reality. Even if one went out, one could not remain there for long at all.
Put simply, someone with a system who had cultivated a Great Dao and reached Great Dao Perfection could enter the Land of Shining Stars for, at most, three days.
Once those three days passed, if he had not cultivated the power of reality, he would completely dissipate.
But for a phantom person entering a real land, let alone cultivating the power of reality in three days, he probably would not even have fully adapted yet!
The reason the minimum requirement was ten Dao Worlds was that once one possessed ten Dao Worlds,