A crisp click of a lock followed by the slow creaking open of the door surprised Su Qingyu with who walked in.,And Cheng Ruijin was still holding a two-year-old child by the hand. She had never seen this child before, and Cheng Ruijin was also unmarried.,"Apart from being the legitimate daughter of a marquis's household, what makes you superior to me If it weren't for my family's burden, how could I possibly lose to you"。