Reborn in the 1970s: After a Marriage Swap, My Cold Military Officer Husband Breaks His Vows

Ruan Wen awakens in 1971, realizing she has been reborn into her past. In her previous life, she sacrificed her own happiness to please her stepmother, Liu Shufen, and her favored cousin, Sun Lanlan. She voluntarily married into the poor Huo family, leaving the prestigious Lu family to Sun Lanlan. Her husband, Huo Guoan, was abusive and unfaithful, and she spent ten years in misery before being murdered by a crazed Sun Lanlan. Now reborn, Ruan Wen resolves to change her fate and avoid marrying Huo Guoan.

When the family discusses the arranged marriages, Sun Lanlan feigns reluctance to marry into the Lu family, claiming she would rather suffer in the Huo family. Ruan Wen, seeing through the scheme, agrees to take Sun Lanlan's place and marry into the Lu family. She also discovers that Sun Lanlan is actually Liu Shufen's biological daughter from a previous relationship, while she herself is merely a niece. Ruan Wen confronts her father, Ruan Yuzan, revealing that Liu Shufen is plotting to steal his family's medical secrets. She convinces him to divorce Liu Shufen and sends her and Sun Lanlan to the countryside as sent-down youth, securing her own safety and cutting off her stepmother's schemes.

Ruan Wen travels to Beijing to meet her fiancé, Lu Jingheng, a battalion commander in the military. Lu Jingheng initially despises her, viewing her as a spoiled capitalist daughter, and openly expresses his dislike. However, Ruan Wen remains calm and rational. At the train station, she saves a child suffering from an asthma attack using acupuncture, impressing Lu Jingheng with her medical skills. She proposes a marriage of convenience: she will fulfill his grandfather's wish for the engagement, and in return, he will provide her with protection and a place to live. They agree to three rules: no interference in each other's private lives, Lu Jingheng must handle his relationship with his childhood sweetheart, Gu Qingyu, and they can divorce freely if either finds someone they truly love.

Upon arriving at the Lu family compound, Ruan Wen faces hostility from Lu Jingheng's mother, Qin Lan, and his childhood sweetheart, Gu Qingyu. Despite this, she wins over the family patriarch, Old Master Lu, by diagnosing and treating his chronic illness using traditional Chinese medicine. Her treatment proves effective, restoring the old man's health and earning the respect of the entire family. Qin Lan's attitude softens, and she begins to accept Ruan Wen as part of the family. Ruan Wen also establishes herself in the compound by using her medical knowledge to help other military families, gaining their admiration and silencing critics.

As Ruan Wen settles into her new life, Lu Jingheng finds himself increasingly curious about her. He observes her competence, kindness, and resilience, noting that she is nothing like the frivolous woman he expected. Their relationship evolves from cold cooperation to a tentative partnership, with Lu Jingheng beginning to show subtle signs of care and respect. Ruan Wen, focused on survival and building a stable life, maintains her boundaries but acknowledges Lu Jingheng as a reliable ally. The story follows her journey as she navigates family dynamics, political challenges, and her own emotional growth, determined to forge a new path different from her tragic past.