2. Mother-in-law refers to a man who has settled in the woman's house after marriage. Taking female parents as parents, children born with their mother's surname inherit their mother's surname; Generally refers to people with low status. Because she married her host's daughter, she was called "son-in-law". Poor protons are rich, and if they cannot be redeemed after expiration, they will be superfluous. Low status, as one of the objects of service and border defense.