I was born on the seventh day of my grandfather's first birthday, so I was selected by the underworld to become the reincarnation of ghosts.
The King of Hell sent people to capture me and take me back to the underworld. Fortunately, my grandfather stepped in in time and took over the work of oxen and horses for me, replacing me as the ox-headed horse noodle that I had been working in the underworld for fifteen years.
Over the past fifteen years, I have continued to practice, and I was finally qualified to take over my grandfather's class and become a Yin-Yang Walker.
From then on, he performed the deeds of the ox-headed and horse-faced people in the Yang world instead of the underworld.