A Swap of Brides: My Short-Lived Brother-in-Law Is Mine Now

[Both reborn + switched marriages + satisfying revenge in the inner household + devoted couples] In her previous life, Tang Jihua married a junior military officer and poured all her wealth and strength into advancing his career, helping him rise step by step from commandant to great general who defended the nation. But who could have guessed that the sister-in-law she had always respected was actually her husband's former wife? Tang Jihua stumbled upon their affair and was poisoned to death by the pair. The “niece and nephew” she had treated as her own children merely watched coldly. They hated her for taking their mother's place. Tang Jihua had devoted her whole life to the family, only to be thoroughly manipulated by every one of them. Reborn, Tang Jihua meant to break off the engagement. But her elder sister, who had been reborn ahead of her, schemed to steal her fiancé. How could a lowly soldier compare to the legitimate son of an earl? So Tang Jihua handed the scumbag over with both hands and happily married her future brother-in-law, who had been short-lived in her previous life. The Earl's estate is a deep sea. Her vicious mother-in-law and wicked sister-in-law watch her like hawks. Tang Jihua takes each challenge as it comes, just waiting for her short-lived husband to breathe his last so she can enjoy life as a wealthy widow. But who could have expected her short-lived husband not to die? His health improves day by day, and it turns out he has been reborn too! [PS: This is a fictional setting, not based on the history of any dynasty. Entirely fictional.]