Who said the eldest daughter is crazy? She's clearly a woman of high rank and influence in the

Everyone is waiting for Xi Yueli to die.
Xi Yuefu usurped her control over the household affairs, Aunt Fang sent her to the estate to recuperate, and even her fiancé wanted to publicly break off the engagement—"You can't even remember what happened yesterday, how can you be worthy of being my wife?"
With a smile, Xi Yueli peeled away everyone's layers of pretense.
Because she discovered a secret: she wasn't crazy. It was just that during her "illness episodes," she borrowed four pairs of other people's eyes.
One pair of eyes belonged to the Dark Pavilion Master's sword, another to the Northern Shuo National Preceptor's eyes, the third to the Southern Merchant's daughter's ears, and the fourth to a terminally ill flower thief.
They live in different places, watching over the world for her. And she—remembers nothing, yet sees everything.
Later, she took charge of the household affairs, investigated secret accounts, and reopened old cases, each step landing on everyone's Achilles' heel. The capital was abuzz with rumors: the eldest daughter of the Xi family, who had gone mad, seemed to have an extra pair of eyes in the back of her head—she was shrouded in mystery.
Prince Chen, Helian Jing, who was above all others, stared at her coldly for a long time before finally lowering his head and whispering in her ear, "I owe you a life. Whether you're faking madness or truly insane, I accept it."