She was originally a white fox raised by Fairy Bi Xiao, a disciple of the Heavenly Worthy of Numinous Treasures.
Bewitched by the Six-Winged Black Mosquito, she secretly descended to the mortal world. Later, an immortal she met in a dream enlightened her, and she began cultivating the Dao.
Becoming an immortal was the dream she longed most to pursue.
Championing justice was how she roamed the martial world and stood up for what was right.
Yet after a thousand years of cultivation, she transformed into a Nine-Tailed Celestial Fox.
She witnessed the world's many changes and the decline of her own path, saw through the suffering of all living beings, and wandered freely between heaven and earth.
The Demon Venerable used the Nine-Tailed Celestial Fox, an immortal companion, to drive a wedge between the Buddhist and Daoist factions and provoke them into fighting among themselves, intending to seize the chance to unite the Three Realms.
In the end, the Nine-Tailed Celestial Fox exposed the rift between the Buddhist and Daoist factions, then led a host of divine beasts and immortal companions to defeat the Asura Demonic Way.