Die, surpass your limit, or become a Transcendent. There were three options available to a cultivator who had attained a State of Unity.
Every single living being born on a continent, whether an Iron Grade Pranic Beast or a Gold Grade Pranic Beast, are born with the same size of their souls. The size of the soul, as permitted by a Continent to enter it and connect the body and mind of a creature, is its natural limit—Expert Gold Grade.
Therefore, for an Expert Gold Grade Pranic Beast, attaining a State of Unity means they have already turned the entirety of their soul into an astral sea.
So, they won't have much room for growth beyond this.
For anyone else, even after attaining a State of Unity, they would still have a small portion of the inertness in the soul left. They would have to swiftly rattle it by relying on their State of Unity, moments after obtaining it, since they would have fully consumed their astral sea by then.
