Mismarriage (2012)

Original title: 错嫁

To repay a life debt, Su Xiuwen marries into the Wu family, leading to the disappearance of his first wife and the separation from their daughter, Xiang Ying. Years later, Xiang Ying unknowingly falls for her stepsister’s fiancé, sparking a love triangle. When a mysterious woman reveals herself as Xiuwen’s lost wife and uncovers long-buried secrets, past and present collide, threatening to upend both families.