Feeding a girl is like feeding the neighbor's New Year pig. All that work. In the end, it goes to some other family.” What is the significance of this quote?

Lee Sing says that having a girl is like feeding the neighbor's New Year pig—all your care goes into something that will end up with another family. This is a misogynistic way of saying that girls hold no worth to a father. They merely take up space and resources only to be married off into another family in the end. There is no profit to be gained by the father.

Also it was a part of her culture in China with the one child per family law the males were the ones to take care of the parents in old age so to her even as a women herself she thinks women are useless