Additionally, through this system comparison, it suddenly makes sense why cultivators become so miserable after losing spiritual energy!
Because spiritual power acts as a special, advanced energy source that, from the first moment a cultivator absorbs and refines it, continuously infiltrates and changes the internal structure of their body, making the cultivator's body stronger, extending their lifespan, and keeping every cell in a state of energy-filled vitality.
Even at the last moment of their life, before they pass away peacefully, the body functions of a cultivator who ends well still maintain their original state.
So, it can be said that all the vitality a cultivator possesses relies on spiritual power.
Especially after fasting, when they don't need external energy replenishment, they can maintain their body's needs relying solely on spiritual power—in other words, fasting is the turning point for a cultivator's body to wholly use spiritual power as its energy source.
