Twenty-three years ago, the wife of the male protagonist, the eldest son of the Su family, the richest man in Lingcheng, gave birth to a daughter in the delivery room. However, Grandpa Su had already spoken that only by giving birth to a son could the female protagonist enter the house. So, under the instigation of her mother, the female protagonist lost her daughter and an orphan's son. In order to facilitate future recognition, the Su family's emblem was stamped on the daughter's back shoulder...