Ning Xia's parents came from a village. They excelled in their studies when they were young and became government workers when they grew up, thus having the standard of living they had now.
Even when their living condition was not on the same level as it used to be in the past, Ning Xia's mother still had more of a village person's mindset.
People from villages got married in their teens. Even if they did not get their marriage certificates, they would host a feast in the village and get married first then apply for the marriage certificate when they were legal to do it.
Usually, village girls who were 16 or 17 years old were already mothers of one-year-olds.
That was why Ning Xia's mother could not help herself from saying those things when she saw how well Yun Jian and Si Yi matched each other.