I Became the Heroine of an Old-Fashioned Rebirth Novel

Reborn as the Unrivaled Heiress is a classic power fantasy about a reborn female lead, and it has remained wildly popular for years. According to the plot, the heroine, who was used all her life and died wrongfully, is reborn with her wits finally about her. She tramples her half-sister, takes on her stepmother, and gives her scumbag father what he deserves, dazzling the world and making a name for herself. While exacting her revenge, she can also fall in love with a scheming prince who has spent years patiently eyeing the throne, winning herself a splendid future as empress. System: Host, please take the original heroine's place and complete the plot. Once your mission is done, you may return to the modern world and receive a cash reward of one billion. Xie Yaoguang, who had just stayed up all night reading the novel and was brought in by the System to become its heroine of the same name: "..." The plot sounds good, and the reward sounds even better, but what is she supposed to do when she hasn't memorized the whole novel and doesn't have the heroine's sky-high IQ? But for a billion, she's all in! So Xie Yaoguang, who insists she hasn't memorized the whole novel and definitely doesn't have a superhuman IQ, starts pulling all sorts of wild moves along the way. Her half-sister accuses her of having an affair: "Yeah, sure, I had an affair. Go ahead and spread it everywhere. I don't care about my reputation, and it'll ruin your plan to marry into a powerful family. Heh heh heh." [Take down half-sister: check] Her father's concubine accuses her of being unfilial and disrespectful to her elders: "Mm-hmm, you're an elder. I'm sure one of my father's political enemies would be delighted to tell the emperor, who suffered so much at the hands of his stepmother back in the day." [Take on stepmother: check] Her scumbag father threatens to punish her under the family rules: "Go on, beat me. Beat me to death. After you're done today, I guarantee the whole capital will hear tomorrow that your family is hiding a dragon robe!" [Give scumbag father what he deserves: check] Xie Yaoguang: How was that, System Bro? System: ...Something about this doesn't seem right, but you did follow the key plot points from the outline to the letter. Ding! Your five hundred million has been deposited! ** Three years after transmigrating, Xie Yaoguang has strictly followed the System's key plot points for the sake of her billion. She has marched through the story with her heart in her throat, killing rebel kings, driving the grasslands to exhaustion, improving people's livelihoods, and finally becoming famous throughout the land. No one fails to recognize her. Watching Xie Yaoguang venture farther and farther down the path of a power fantasy, the System ponders for a long time before finally realizing what's wrong: Xie Yaoguang, where's your romance plot? You're supposed to become empress!! (shouting) Xie Yaoguang: Oh, right. But I already killed the arrogant, self-important male lead from the original story. How about... you let me pair up with the emperor, who never got thrown off his horse by him in this life? He's my sworn big brother, so we could make do with that. The emperor, who has been single all his life and whose mother suspects there's something wrong with him: *peeks out obediently.jpg* System: ...I-it could work. They're both empresses, so it doesn't matter whose empress she is... right? Moral: Work hard and live well