Sublime Ascension was a phenomenon formed when a cultivator fully refined their Hearts of Qi to its maximum. Unlike all other phases, the Sublime Qi phase was a milestone and a critical point in one's cultivation. It solidified one's foundation!
It signified the future of a cultivator and thereby was followed by telling the world that today: I, cultivator, have truly started my journey!
Wei Wuyin felt this and knew his spirits were changing. His cores were transforming, no longer ovals or orb-like structures protectively shrouded by a cyclone of qi. His Divine Heart of Elemental Qi became a white mist of chaos, constantly becoming a world of flames, a world of water, a world of earth, a world of wind, a world of metal, a world of lightning, a world of wood, a world of magma, and a world of ice!
At times, they would all become one, become a true world within the white mist!