Because Fu Kui seized the initiative, the vast majority of intelligent beings instinctively tend to join the Great Xia's [Nine Provinces Barrier] while constructing barriers.
This is the advantage of being the first to act, and it is Fu Kui's open scheme.
After all, everyone understands that the Tao Ancestor will not interfere with the choices of the mountain people.
Even if they choose to help Xingtian City, or decide to join this war, it is merely the choice of the Hundred Lands Mountain Range, not the Tao Ancestor.
So, taking advantage of the Hundred Lands Mountain Range being embroiled in the 'Kunlun Struggle,' and unable to attend to other matters, Fu Kui resorted to creating a fait accompli as initially planned.
This way, if the Hundred Lands Mountain Range wants to expand the [Profound Garden Barrier] again, they must offer more favorable conditions than Fu Kui.
