Chinese mythology frequently presents existence as a layered structure involving Heaven, Earth, and the Underworld. These realms are not isolated worlds but interconnected dimensions of authority, life, death, judgment, and spiritual transformation.
Heaven represents divine administration and cosmic hierarchy. It is ruled by celestial authority, organized through officials, generals, immortals, and spiritual offices.
Earth represents the mortal realm, where humans, animals, spirits, kings, monks, and wandering beings exist within cycles of desire, suffering, and moral choice.
The Underworld represents judgment, karma, consequence, and transition after death. It is often structured through courts where souls are evaluated before punishment, rebirth, or further spiritual movement.
This three-realm structure creates a mythology where actions in one realm affect the others. A rebellion in Heaven may disrupt Earth. Human actions may affect judgment in the Underworld. Spiritual intervention may cross all boundaries.
Sun Wukong’s mythological importance partly comes from his ability to disturb all three realms. He challenges Heaven, travels through Earth, and even interferes with records of death in the Underworld.
The Three Realms therefore function as more than background cosmology. They provide the structure through which Chinese mythology explores order, consequence, transformation, rebellion, and enlightenment.