The Richest Man Proposes with a Hundred Billion, and the Whole Internet Begs Me to Say Yes

[1v1, both romantically inexperienced, doted on by everyone, incredibly sweet and satisfying, face-slapping the scum, all-rounder, secret identities, strong heroine, campus, top student, genius] Everyone says the illegitimate daughter the Shi family brought home is a useless dunce, an ugly girl who isn't fit to be seen in public. That is, until she takes the stage at an elite university's opening ceremony as the outstanding freshman representative. Everyone: She must have cheated! How could a dunce get into this school? Then the results are announced, and the perfect-score top scorer shocks the entire nation! Even more shocking is that... She's the genius girl who mastered piano in five days. She's the Go prodigy who achieved the divine move in three days. She's also the mysterious painter whose casual work sold for a fortune. And her family connections are beyond formidable... The empire's top tycoon is her grandfather, and he picks her up by helicopter every day. The world's legendary designer is her grandmother, and she can wear any couture gown she likes. The empire's top soldier is her older sister, who makes anyone who dares to bother her disappear. Masters of national-treasure caliber from every field are also lining up to take her as their apprentice. Everyone thought the young miss was already incredible, until the empire's mysterious ruler, a man of immense power whom everyone fears, pulled her into his arms and coaxed her in a husky voice: “Baby, had enough fun? When are you going to admit you're mine?” P.S. They only pretend to be uncle and niece, with no blood relation, and they aren't on the same household register! Sweet all the way through, no angst, lighthearted and funny, and don't expect logic!