(No logic, no connection to history or either of the two TV dramas, just romance!!! Leave your brain at the door.)
After Maertai Ruoxi dies of a broken heart, she opens her eyes to find herself reborn as Zhen Huan, just before the selection of consorts, and bound to the [Palace's Heavenly Grace] System.
Armed with memories of her past life and the System's golden finger, she resolves to turn her fate around. Palace intrigue? The System warns her automatically. Lacking talent? Her rewards instantly max out her skills. Health hazards? Protective talismans keep her safe. With Ruoxi's wisdom and Zhen Huan's beauty, she navigates the imperial harem with ease.
Emperor Yongzheng soon senses something is amiss. That familiar expression and those insights beyond her time can only belong to his unforgettable Ruoxi! After testing her and confirming the truth, he is overcome with joy and fiercely protects the lover he has regained, showering her with every affection. "In this life, I will never fail you!"
And so, everyone watches "Zhen Huan" breeze through life: winning the emperor's exclusive favor, foiling schemes, bearing imperial heirs, bringing down Consort Hua, and deposing the Empress... The hardships at Ganlu Temple? They never happen! Her bond with the Seventeenth Prince? It never begins! She follows a path of glory without a single setback, ascending to the throne of Empress Dowager and enjoying the greatest splendor.
This is the ultimate sweet romance of a soul returned, and an unparalleled legend empowered by the System.
Well, this plot has nothing to do with Ruoxi. It's about the female lead falling in love with the emperor, not Ruoxi and the fourth prince.