Trading Marriages in the 1980S: The Cannon Fodder Villainess Becomes the Beloved of the Family Compound

[Transmigrate into a Book in the Era + Cannon Fodder Fights Back + Female Supporting Character Takes Charge + Swapped Marriages] [Book Transmigrator vs. Reborn Woman: The male supporting character who was supposed to die young is thriving, while the reborn heroine is furious] What’s it like to get caught in an affair from the start? She’s transmigrated into the book as a cannon-fodder female supporting character. Her reborn stepsister wants to swap marriages so she can marry the future richest man, and pushes the short-lived male supporting character onto her instead. With her remarkable medical skills, she becomes the darling of the whole residential compound. The man who was supposed to die young escapes danger time and again, earns one great merit after another, and keeps rising through the military ranks. Meanwhile, her stepsister gets her wish and marries the male lead, expecting to become the wife of the richest man and live in luxury. But after the wedding, she discovers that her in-laws are impossible to deal with, her husband has no ambition, and, to make matters worse, he spends all his time coveting other people’s wives. Her stepsister falls apart. She was reborn for nothing, and her life is even worse than it was in her previous life!