Wahuang Palace, hidden in the Void Realm, is completely independent of the Three Realms and Six Paths.
The Deification War, because Sect Master Tongtian laid down the Immortal-Slaying Sword Formation, coupled with the Supreme Elder Lord, Yuanshi Heavenly Venerable, and the two Saints of the Western Religion breaking the formation together.
Six Saints, a full five personally participated in the Deification War, and since each Saint possesses the power to destroy heavens and earth, after the Immortal-Slaying Sword Formation, Hongjun Ancestor, who is one with the Heavenly Dao, explicitly prohibited all Saints from appearing in the Three Realms and Six Paths.
Therefore, all Saints reside in the Void Realm.
Originally, under the Goddess Nvwa in Wahuang Palace, there was also a Spiritual Pearl Boy for company.
However, the Spiritual Pearl Boy encountered the calamity of deification and transformed into Nezha, so Wahuang Palace became even quieter.