Although Cain could have directly infused the Origin Power into the Black Hole within his Soul Dimension or used it to decipher Oniric Truths, that was not the wisest course of action.
A Divine Kingdom was an extension of the cultivator's very being, and by channeling Origin Power into it, one would not only nurture their internal energy reserves but also accelerate their comprehension speed and deepen the feedback received from the cultivators within their domain.
It was slightly slower than using the Origin Power directly, but the holistic benefits far outweighed the drawbacks. It fostered growth across all dimensions—spiritual, mental, and physical. In other words, it was far more efficient in the long run.
As the Origin Power surged from Cain's mouth and descended into his Divine Kingdom, it didn't remain strictly confined to his territory. Roughly half of the power overflowed into Meylin's Divine Kingdom.
