The Semi-Saint Tianxin looked solemn.
They had spent a considerable amount of time selecting this body out from numerous cultivators.
Those outside could not enter the Pangu Universe at all.
Unless they were cultivators who had once ascended from the Pangu Universe.
However, the cost of transferring a Saint was too high, something even the Saint Alliance could not bear.
In order to refine the heart of the Pangu Universe, they had no choice but to find a suitable body, then transfer over the soul of a Saint who was at least at the mid-stage.
A strong natural talent synergizing with sufficient resources could result in a rapid breakthrough in the body beyond the realm of a Saint.
A normal Saint couldn't refine the heart of a universe.
By the time the Saints of the four top powers had enough strength to refine the heart of the universe, the Pangu Universe would have been discovered by other powerful entities.