婚姻是人类传宗之大礼。人类的传宗往往与经济技上钩。当男人成为家族的主宰者之后，他们便要确认其血缘亲族，而其子女也乐于确认与父亲的血亲关系，两者都有一个共同的目的一经济。前者是为了避免自己用血汗挣来的财产落入外家族之手，后者同样也是为了不让他们将要获得继承 Marriage is a gift from human beings. Human beings often tend to be economically and technically illegitimate. When men become masters of the family, they have to confirm their blood relatives, and their children are happy to confirm the blood relationship with their father. Both have a common purpose and an economy. The former is to avoid falling into the hands of foreign families with their sweat earned property, the latter also to prevent them from going to inherit