Reborn in the 1970S: I Dumped the Tycoon and Married a Scheming Bigshot

[Military romance in the 1970s + sisters swap marriages + both reborn + raising children + medicine + food + sweet romance + satisfying revenge] In her previous life, Jiang Yin married a wastrel at her parents' insistence, while her adopted younger sister lorded it over her in her own home. Her sister not only stole her job but also slipped into the bed of her military-officer brother-in-law on Jiang Yin's wedding night. She got her wish and became a regiment commander's wife, then followed the army to its posting. Who could have guessed that ten years later, her sister would return alone, bringing nothing but her brother-in-law's ashes? Meanwhile, the wastrel Jiang Yin had married had turned over a new leaf, become the richest man in the capital, and loved his wife more than life itself. Reborn, Jiang Yin watched as her adopted sister went to great lengths to swap their marriages, taking the husband who had originally been meant for Jiang Yin and marrying the wastrel instead. Jiang Yin watched coldly. The world had seen only her former glory, never how much of herself she had poured into it. If her sister was so eager to jump into the fire, Jiang Yin certainly wouldn't stop her. As for this brother-in-law, he might have a short life ahead of him and a hidden ailment, and people said he could never have children. But in every other way, he was far better than Jiang Yin's previous husband. He was definitely worth getting to know. But could someone tell her why this supposedly afflicted man later clung to her night after night, demanding more without restraint...?