Reborn as the Wretched Younger Sister-in-Law, the Young Lady Fights for Everything

[Transmigrating into a 1970s book, golden finger, punishing scumbags, building a fortune, sweet romance] Miss An Ning transmigrates into the script of a period drama and becomes the heroine's awful sister-in-law. The heroine is forthright and capable, working efficiently, caring for her in-laws and children, handling all the housework, and thriving in her career. As the contrast to the heroine, the sister-in-law is spoiled, fussy, lazy, and selfish. Out of jealousy, she often picks fights with the heroine. Everyone who knows the two of them praises the heroine and calls the sister-in-law wicked. The young miss sneers. “You think you can step on me to climb to the top?” “Not a chance!” * The sister-in-law's behavior gets worse and worse. The heroine scoffs: who would marry a lazy woman who only cares about eating? But the very next day, suitors crowd into the Jiang family courtyard to propose to her. The sister-in-law turns down a temporary job because her high school education makes her think she's too good for it. The heroine sneers: which factory would hire someone so conceited and incapable? Who could have guessed the sister-in-law would become a boss, with workers scrambling to work for her? The sister-in-law tries to marry into a better family. The heroine looks down on her: a mother-in-law from the city is hard to please. Just wait until the sister-in-law starts crying! But then some fool comes along and treats the sister-in-law like a treasure. The heroine waits and waits, but the sister-in-law's day of tears never comes. Instead, her own life loses all hope. The early chapters punish scumbags; later chapters focus on family life, romance, and career. The male lead, He Chengxuan, is arrogant and cold, but once he falls for the heroine, he loves her devotedly and unchangingly until death. He spoils her endlessly.