The Four Sects' original strategy was to gather nine Corpse Resolution Cultivators, then ascend to trigger the mechanisms of heaven and earth, bringing down the divine thunder to destroy the Blood Seed.
In doing so, they would not only slaughter the Demon Head but also complete a meritorious deed, ensuring unobstructed ascension—a truly perfect solution.
Although unexpected complications had arisen, and the merit of slaughtering the demon was claimed by others, the world was now short of everything but demons and meritorious deeds. It wasn't worth colliding with this mysterious and powerful figure over a single Blood Seed.
Thus, Meng Fuyao was quite willing to give way.