Why do they all want boys? Is it really for the sake of succession?

1, the deep-rooted traditional concept: son preference; according to the previous genealogy, the son can be in the family tree, the daughter once married is not their own family will not be reflected in the genealogy

2, the theory of the fire: if the son of the future married to a wife and gave birth to a child (if the birth of the boy), then the father of the family's fire can be passed down, but if it is a daughter, married out is not their own family, even if the child is a boy, not with the mother's name is equal to cut off the family (from the point of view of the female). If you are a daughter, you will not be married off to your own family, and if you have a child, even if it is a boy, you will not take the mother's name, which is the same as cutting off the family name of the mother's family (from the woman's point of view).