Li Changsheng came to this world and saved a green ox.
Later, that ox became the Great Sage Who Pacifies Heaven, the Bull Demon King.
He guided a willow tree onto the path of cultivation. That willow established the Celestial Court and became the Heavenly Heart Emperor.
He took in a monkey, who became the Great Sage Equal to Heaven.
He took in a little monk, who became the Buddha Ancestor Wutian.
He took in a divine sunbird, which became the Great Sage of the Sun.
After countless ages, Li Changsheng reenacted his own path and became the Dao Ancestor!