Reborn in the ’70s: Remarried to a Cold Army Officer, My Ex Regrets It Bitterly

Xia Chuwei is an eighteen-year-old orphan who lost both parents when her father died saving the father of her fiancé, Mu Beichen. Raised by the Mu family, she has spent her life adapting her dreams and hobbies to accommodate Beichen’s preferences, believing that their arranged marriage will eventually bring them together. On her birthday, which coincides with the scheduled day for them to register their marriage, Beichen stands her up to pick up Xu Xueqing, a woman he has loved for years, from the train station. Chuwei overhears Beichen and his friends discussing their relationship in a private restaurant room, where Beichen openly states that he only agreed to the marriage to repay a debt and views Chuwei merely as a sister with no family to protect her. Devastated and humiliated, Chuwei leaves the restaurant in tears.

Gu Shisheng, a twenty-five-year-old battalion commander and childhood friend of Chuwei, finds her crying outside. He has harbored feelings for her since childhood and has always protected her from a distance. After taking her to a Western restaurant to comfort her, Gu Shisheng proposes marriage. He argues that Chuwei deserves to be cherished and that he can provide her with a home and a partner who will not take her for granted. He offers her a fifteen-day period to consider his proposal, during which she can also attempt to win back Beichen’s affection. If Beichen fails to change his behavior, Chuwei agrees to marry Gu Shisheng. Meanwhile, Lin Zian, a mutual friend and colleague of Beichen, confronts Mu Beichen about his treatment of Chuwei and his ongoing affair with Xu Xueqing. Lin Zian reveals the true sacrifice of Chuwei’s father and warns Beichen that he is losing a good woman due to his arrogance and indifference.

Chuwei visits Beichen’s dormitory to deliver a meal she prepared, hoping for a final conversation. However, she discovers a lipstick stain on his collar and realizes he has no intention of ending things with Xu Xueqing. Heartbroken, she decides to proceed with breaking off the engagement. Back at the Mu residence, Mu Beiwang, Beichen’s younger brother, confronts his elder brother and their mother about the incident. He reveals that Beichen spent Chuwei’s birthday with Xu Xueqing and that Chuwei was left crying alone. The confrontation escalates until Mother Mu slaps Beichen for his disrespect and cruelty. Chuwei, witnessing the scene, steps in and formally requests to dissolve the engagement, stating that she and Beichen are not suited for each other and that she wishes to find someone who will truly value her.

Gu Shisheng’s father, Gu Lin, learns of Beichen’s behavior and is furious on behalf of his son and Chuwei. He agrees to expedite the marriage approval process, determined to ensure that Gu Shisheng can marry the woman he loves. Gu Shisheng remains confident that Chuwei will choose him, believing that Beichen’s mistreatment has irreparably damaged their relationship. As Chuwei prepares to leave the Mu family and start a new life with Gu Shisheng, Beichen begins to realize the gravity of his loss, though his pride and confusion prevent him from taking immediate corrective action. The story concludes with Chuwei firmly committing to her future with Gu Shisheng, leaving behind a relationship built on obligation and neglect.