In the current era of Hongmeng, the age of resources had already begun. Moreover, the Spirit Nurturing Holy Land's actions in the millennia before deploying Spirit Nurturing Masters were practically cast from the same mold as the Upper Sects' current methods—in fact, they were even more ruthless.
So when the Spirit Nurturing Holy Land began distributing the Basic Spirit Nurturing Technique to the Upper Sects, heh, a blockade had long since formed around any high-tier resource that was even remotely precious.
As a result, the Upper Sects of today only control resources for stages below Duality.
For Three Talents Promotion resources, they cultivate some themselves, but for another portion, they have to turn to the Blessed Lands.
