The crisp sound of the lock being picked echoed from outside. The door creaked open slowly, 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, and the two of them have been living at the Su residence.,Su Qingyu looked coldly at Cheng Ruijin and asked, "When did you two start"。