Yu Baihe was impulsive and didn't want to let Gu Qianqian have any 'good things', so she quickly changed her stance despite her previous strong opposition.
However, as she attempted to discuss the plan with her daughter, Lu Zhendong grabbed her arm to prevent it. "What are you going to discuss? We can't let Xinbai know about this, otherwise, with her temperament, she'll cause a huge ruckus before anything even happens."
"But how can she do what we want if we don't tell her?"
"And why not?"
During his retort, Lu Zhendong took the opportunity to make up a false story to brainwash Yu Baihe, "Tell her that your biological daughter died at birth and Xinbai was a child we brought home. We didn't know whose child she was when we found her. However, we now have clues leading to the Gu family, and we discovered she is a Gu child. We've decided to painfully give her back to the Gu family."
"What? You want me to tell Xinbai she's not my daughter?"