Chapter six explores the important yet basic issues of ethnonym , subgroups , clans and writing system . chapter seven draws a conclusion from the above investigations . the contribution of my research lies in two aspects : 1 第六章以专题的形式，细致探究跨界hmong人的几个重要而又基础性的问题，一是族名族称问题，二是支系问题，三是姓氏家族问题，四是语言文字问题问题。
