A gray energy that Universe Creators use. Hongmeng used some of the energy to transform into metal, wood, water, fire, and earth to create the primary cosmos, but since the four secondary cosmos where small and didn't need the five elements, so earth, fire, water, and wind where created.
Earth, fire, water, and wind eventually created darkness, light, and lightning.
It devours anything not made from Grandmist energy.
Is only inferior to Xuanhuang energy.