Yu Xiu loves children, so whether it's her son or daughter, she doesn't want to favor one over the other.
If it were those families that favor boys over girls, they wouldn't even say she's good to her kids, they'd call her biased for doing anything else.
Yu Xiu has experienced this herself. In her family, although her parents treated her well, they treated her brother better, so Yu Xiu doesn't want her children to feel the same way.
Though she doesn't resent or hate it, she doesn't like that mindset, and since her family allowed her to receive so much education, she has no complaints about her family. She just hopes to do better herself.
The reason Yu Xiu says this is that although her parents were a bit biased towards her brother, they were also good to her. Maybe it was because there were many children in the family and they couldn't give attention to all.
