As long as the Fire of the Soul is not completely destroyed, these Undead Creatures are not truly dead. They can fully extract strength from the Dead Spirit Half Plane and condense their bodies again.
However, death and reformation through the Fire of the Soul both consume a vast amount of energy, and this energy comes from the Dead Spirit Half Plane.
Through the years of understanding the Dead Spirit Half Plane, Huo Yuhao gradually realized that it must be a space dimension independently created by Teacher Alex. Essentially, it's not as stable as a main plane like Soul Land, or to put it more simply, the Dead Spirit Half Plane is more like a dimension formed by pure energy bodies, where everything is composed of energy.
