[A seemingly foolish, straightforward, and guileless "fake" heiress X a sinister, cunning, eccentric, and calculating "real" eunuch]
"A red cord ties the courthouse together. He won't be emperor, but a matchmaker instead. The young emperor grants a marriage, and the realm is thrown into a frenzy."
Everyone says the Imperial Authority Bureau is a living hell, and its chief eunuch, Wen Li, has earned the nickname "Wen the Demon King."
Lin Nanchu disagrees. What demon king? He's clearly a beauty.
An absurd imperial marriage decree and a face identical to that of the marquis's daughter turned Lin Nanchu into Mu Beixi's replacement, marrying her off to the greatest eunuch in all of Dafeng.
A butcher's daughter becomes a noble lady.
The world doesn't know the truth and pities the marquis's household, while the household hopes Lin Nanchu will die in the Imperial Authority Bureau and put an end to this farce.
Little do they know, the moment Lin Nanchu saw Wen the Demon King's beautiful face, she forgot all about being afraid.
Who cares if he's a eunuch or a husband? The identity isn't hers, and neither is the betrothal. Getting to feast her eyes on that beauty is more than enough.
The Imperial Authority Bureau gains a chief eunuch's wife. Everyone thinks a little bunny has wandered into a wolf's den and won't last a day. But this little bunny is a saucy one. Knowing Wen Li is a eunuch, she shamelessly flirts with him.
Taking advantage of her status as the chief eunuch's wife, she roams the guards' training grounds, looking here and there, grabbing front and back, and somehow turns the terrifying Imperial Authority Bureau into a pleasure house.
Theme: My fate is mine to decide, not Heaven's.