All things in the world possess souls, but only humans are born with three: the Heavenly Soul, the Earthly Soul, and the Human Soul! Every species other than humans is born with only one soul: the Earthly Soul.
The Earthly Soul is a bridge that connects with spiritual energy! A stone is born with an Earthly Soul. Nourished by spiritual energy, it gradually develops intelligence: a Heavenly Soul.
Those with a Heavenly Soul can cultivate on their own. Once they cultivate to the Tribulation Transcendence Realm and survive the Nine Heavens Mysterious Thunder Tribulation, they can choose to take human form.
Taking human form creates a Human Soul, while taking demon form creates a Demon Soul!
Those who take human form and gather all three souls can unite them to form a Primordial Spirit: the Opening of the Apertures. Those who have opened their apertures can cultivate to extend their lifespans!
Those who take demon form gain the ability to devour. They can consume spiritual energy, vital essence, and the bodies of their own kind to strengthen their physiques, but they lose their emotions and can live for no more than ten thousand years!
Although humans are born with three souls, they must open their apertures, uniting all three souls, before they can cultivate! As their cultivation grows, they gradually lose their desires. If they reach the Tribulation Transcendence Realm without severing those desires, inner demons will form! Attempting to transcend the tribulation with inner demons is almost certain to end in death!
If they sever their desires in the Tribulation Transcendence Realm, they can become gods! But the desires they sever become demons!
And so the divine and demonic races came into being!
