After Pangu created heaven and earth, he used Mount Buzhou as a pillar to separate them. Later, Gonggong struck the pillar, damaging the heavens. To save humanity, the gods joined forces with Nuwa to mend the rift in the sky. Weakened, they fell into a deep sleep in the celestial realm for tens of thousands of years, and no one in the human world believed in gods anymore.
Theme: If Heaven had feelings, it too would grow old; the human world is forged through hardship.