The Awful Daughter-in-Law in a Period Novel

[Announcement: My new novel, A Good Life in Ancient Times for Nie Qinghe, is now available. It's a slice-of-life farming story, so please add it to your library and give it a read. XOXO~] Lin Xi transmigrates into a historical novel. The original owner pursued and pestered the handsome, wealthy Regiment Commander Xie until he finally married her. After the wedding, she had countless imagined rivals to contend with: gentle confidantes and scheming little white lotuses. Someone was always trying to become a stepmother to her child! She wished she could keep every woman at least three meters away from her husband. He was fed up with it, though, and after the original owner brought about her own downfall, he finally broke free of her constraints. His career soared, and he became a big shot. Lin Xi: I transmigrate into a piece of work, and now my stepmother and younger sister are eyeing me up? What a life. Forget it. I'd better break off the engagement and stay safe. * Little did she know, she gave herself away the moment she met the man. Xie Qiming investigated her overnight, then showed up to marry her the very next day! Xie Qiming: This little woman is full of holes. She absolutely isn't the original Lin Xi. A female spy? A demon? A ghost? She doesn't worship the moon or cultivate, so she probably isn't a demon. And she doesn't suck out people's yang energy, so she probably isn't a ghost. Could she be a painted-skin monster? But she doesn't seem to be wearing someone else's face. Then she must have come back to life in someone else's body! Wife, who are you, really? Lin Xi: ...Take a guess, hehe. [This is a sweet romance, and the leads are each other's one and only. There are no awful people or third parties. The heroine transmigrates after graduating high school, and she's still rather innocent and carefree. The story focuses on the romance between the leads, with very little career development and not much face-slapping. It's romance and everyday life.] Theme: By depicting how the male and female leads meet, understand, and fall in love with each other, this story expresses a longing for a beautiful marriage.