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.,...while Cheng Ruijin still held a two-year-old child by her hand. She had never seen the child before, and Cheng Ruijin was also unmarried.,Su Qingyu's heart sank, and she asked, "What do you want to do"。