Scheme a Proud Son-in-Law as My Backer

In her previous life, she was a dazzling genius, yet her legitimate elder sister stole her identity, and the Crown Prince drained her of every last drop of strength! Returning with hatred in her heart, she transmigrates into the body of a foolish legitimate daughter from a prestigious family. Take on the wicked grandmother, send the concubine packing, and make the vile younger sister suffer! Topple the Crown Prince and grind the Crown Princess into the dirt. Does it hurt? I'm having a blast! But what's with that man who's addicted to climbing over her wall in the middle of the night? They agreed to be allies and help her clear away obstacles, so how did their partnership turn into a case of “it has to be you”? Ahem... The Sixth Prince, Young Master Yichen, and the Marquis's heir are all vying to marry her, while a Dragon Cavalry General watches her like a hawk. And you, stop sending gifts and people over and just hurry up and propose! The man: Don't rush! I'm negotiating with His Majesty for a loan to pay for the betrothal gifts! Winning her while stepping over the competition is how you prove your skill!