The crisp sound of the lock being picked echoed from outside. The door creaked open slowly, but the person who entered surprised Su Qingyu.,Because she had no children, her mother-in-law made things difficult for her, and her sisters-in-law mocked her. She endured all of it herself.,"Besides being the legitimate daughter of a Marquis, what else do you have that surpasses me If it weren't for my family background holding me back, how could I possibly lose to you"。