Why do American wives have to take their husbands' surnames?

The term "yellow race" is not appropriate. Japanese wives and children should also take their husbands' surnames.

Generally speaking, a wife should take her husband's surname, but this is not necessary. It is just a custom to stipulate that husband and wife should not have different surnames.

It is a legacy of male chauvinism that a wife takes her husband's surname, which is not necessarily to look down on women. China didn't ask for this, probably because most women didn't have names before, so it doesn't matter if they change their surnames.