A crisp click of the lock echoed from outside, followed by the slow creak of the door opening. But the person who entered was unexpected to Su Qingyu.,The visitor is Su Qingyu's distant cousin, Cheng Ruijin. Cheng Ruijin's mother is her aunt-in-law, and the two have been living with the Su family.,Besides being the daughter of a marquis's household, what else do you have that surpasses me If not for my family background, how could I possibly lose to you。