Today's Cultivation World is vast and expansive.
And the power of Cultivators is immense, stretching even into the societies of ordinary mortals.
The purpose of this is to secure a steady source of new disciples.
Even the direct bloodlines of the Imperial Family regard becoming a Cultivator as an honor, and when a new emperor ascends to the throne, they must consult the Sect that supports them.
The Mortal Royal Family is merely a pawn raised by the Sects, whose sole job is to help them manage the commoners...
They naturally do not care about the lives and deaths of these commoners, but for the sake of the occasionally excellent Cultivation bloodlines that might be born among them, they are very insistent on the number of commoners.
This is because of the same reason.
In the mortal world, the population of civilians in various empires is continuously climbing.