First Marriage, then love: wife, never divorce

She's an overlooked spinster; he's River City's youngest high-ranking official. A case of mistaken identity leads her to ask, "Want to get marriage papers?" He recognizes her, feels a flicker of something between love and hate, and doesn't correct the error. She presents a contract: one weekly "bed sheet duty." He smirks, signs. But when he tries to collect on night two, she catches his hand. His sly reply? "Fulfilling our marital agreement." The next morning, she storms out of the study, furious: "Su Yicheng, you crafty official!" Their post-marriage love story begins with a contract and ends with warmth, spoiling, and unexpected passion.