She slept in the belly of the green dragon for who knows how many years, until he established the Immortal Sect and crossed the Yao River to kill the green dragon. Awakening her accidentally.
"What is a demon?"
"Anyone who is different from me is a monster."
"Why do you hate monsters so much? Besides, I'm not a monster."
"Then tell me, what are you?"
"I have been sleeping in the Qingjiao for so long, and also in the Yao water. How about I call you Qingyao."
"Then what's your name?"
"I have been cultivating for so long that not many people call me by my name. I forgot about it."
"Then let's call him Qingjun."
"From now on, the Hall of Health Preservation will be changed to the Hall of Ending Love. Anyone who enters my Qinghua Immortal Sect with the main purpose of seeking immortality and correcting the righteous path will not be able to fall in love."
"It takes two hundred years to reincarnate. I will make you fall in love with me and torture you again. I will not forget my love and the reincarnation will never end."
There are two ways to forget love in this world. One is to find a new love. Second, continue to torture until you no longer love.
Qingyao chooses the latter. From this comes a cycle of two hundred years.