The Spatial Kingdom was a cultivation sanctuary made for training soldiers and promoting the forces of an organization.
After gaining the position of master of the Gray Clouds Sect, already gained various responsibilities in that organization and identifying those most committed to him, Minos presented such an opportunity to these Spiritual Saints.
After a few weeks since he first did this, these experts began cultivating in that place, eliminating any doubts they had about Minos.
They were people who wanted to become stronger and had ambitions. So by being presented with this opportunity, they all became much more agreeable toward Minos. Not only that, they helped even this emperor become more interesting to follow by others who did not know anything about the opportunity.