The crisp sound of a lock being picked echoed from outside, the door creaked open, but the person who entered surprised Su Qingyu.,The visitor is Su Qingyu's distant cousin, Cheng Ruijin. Cheng Ruijin's mother is her aunt by marriage, and the two have been living at Su's house.,"Besides being the daughter of a marquis's household, what makes you superior to me If not for my family background holding me back, how could I possibly lose to you"。