The last name culture is very close however we divide each other because of it. For example: Hmong Yang can't eat heart base on myth. If you unify the whole Hmong thru culture, religion and love. I think it's the first step you have to do. Then you unite everyone together there is no more last name. Because there is no more my religion is better then yours, there is none of that. It's more of hey your my brother, my sister you need my help I'm there.