He transmigrates into the body of the Li family's second young master, a man with no talent for cultivation.
She is the daughter of the head of the Mu family and his concubine. After her mother is poisoned to death, she too is sent to the Li family as a burden.
He tells her, “If I can become an immortal one day, I'll take you to see a bigger world.”
Fate has other plans. Three years later, he still can't cultivate and remains a common mortal, while she awakens an unparalleled spiritual meridian.
From then on, he stays in the mortal world, continually expanding the family business until he monopolizes the entire market for fasting pills.
She remains at the Heavenly Spirit Sect, advancing one cultivation stage every day, slaying countless demons, and eventually becoming the sect's supreme True Immortal.
One day, she takes him to her personal realm and says haughtily, “The Heavenly Spirit Sect is going to war with the Demon Realm. Increase this year's supply of fasting pills by fifty percent!”
He stands his ground. “Fine, but you'll have to pay more!”
She flips him onto his back and pins him down. “No money. I'll pay you in person!”
The next morning, rubbing his aching, limp waist, he stamps his feet in frustration. “What a terrible deal!”