The 1980S: After a Marriage Swap, I Rule the Roost in My Husband's Family

[Period Setting + Both Reborn + Swapped Marriages + Face-Slapping + Everyday Family Life] Ruan Siru is reborn on the day she goes on a blind date with Du Tianhao, the younger son of a pharmaceutical factory director. But to her surprise, her younger sister Ruan Shuyi, who stole her childhood betrothal in her previous life and refused to marry Du Tianhao even at the cost of her life, has already gone on a date in her place and declared that she will marry Du Tianhao and no one else. Hearing Ruan Shuyi say all that, Ruan Siru realizes her sister has been reborn too. So be it. Since Ruan Shuyi is so eager to become the future factory director's wife, Ruan Siru will graciously let her have him. After all, she has no interest in someone else's pharmaceutical factory. She wants to open her own and benefit the people! Besides, Du Tianhao is a treasure trove of a man, with more to him the deeper you dig. In her previous life, Ruan Siru looked glamorous on the outside but endured countless hardships in private. She died before she was even forty. Ruan Shuyi is smug, thinking she can become the factory director's wife just like Ruan Siru did in her previous life. She has no idea that Du Tianhao became factory director thanks entirely to Ruan Siru's advice behind the scenes. The life Ruan Shuyi dreamed of never comes to pass. Instead, she discovers that her husband from her previous life, Zhou Shuoheng, is not only alive, but living happily with Ruan Siru. Wasn't her father-in-law supposed to run just a little auto repair shop? How did it turn into a full-fledged garage overnight? Why does the mother-in-law who used to berate her at least three times a day and make her life miserable act like Ruan Siru's own mother? And why won't that mentally unstable sister-in-law let go of Ruan Siru? What on earth went wrong?!