After the Hand of the Heavens merged with the Blood Lotus Flower, it left the Secret Realm and summoned all the Heavenly Ghosts.
Originally humans of the Celestial, upon their transformation into Ghosts, their Realm did not decrease, naturally becoming Heavenly Ghosts.
This also marked an unprecedented prosperity for the Ghost Race.
During the previous great war among the four clans, the Ghost Race did not have so many Heavenly Ghosts.
This made the Rakshasa Ghost Emperor very active.
With so many Celestials transformed into Heavenly Ghosts, why should he continue to lurk in hiding? From now on, in the Human World, the Ghosts would call the shots!
The power balance between the Human Clans and the Ghost Race reversed instantly, the Celestial Pillar forces of the Human Clans were either wiped out or had become part of the Ghost Race, how could the Human Clans possibly win now?