Primordial Monarch Doumu gave Luo Hou inspiration.
Actually, she also gave the Six Saints a bit of shock.
Before Primordial Monarch Doumu, even Empress Hou Tu had never played "Underworld's Corpse Painted Skin Scripture" to such an incredible level.
As for Ji Changsheng... he directly placed his cultivation target, King Yuqing, in the open, right under the nose of Heavenly King Yuan Shi from the beginning, which didn't trigger any vigilance.
The accomplishments of Yu Linglong and Lady of White Bones further lowered the perceived value of this cultivation technique.
Until Primordial Monarch Doumu was exposed.
The Six Saints were shocked.
Luo Hou was shocked, too.
Although they still considered this technique to have a very low upper limit, even incapable of providing any assistance to the growth of their power—in fact, no assistance at all.