CheejSiav,
About Hmong rituals, taboos, and clan-centric ceremonies, you are asking for the impossible. It is all I am saying. The topic alone is pointless and beyond the scope of any ritual expert or individual, no matter who he/she is and what their level of expertise may be - ancient or modern.
Much like this "original language" discussion, there is absolutely no irrefutable fact or data to try to even make an educated much less sound argument one way or another. As a matter of fact, this Hmong ritual subject is even less creditable one way or another versus the "original language" discussion.
Per my experiences, observation, and community research, as there is no scholarships whatsoever regarding this subject matter, the Hmong just did whatever they wanted, remembered, knew, and felt what is best for them, their clan or family, and that just became the norm including all the variants, changes, additions, minus, and inclusion or exclusion of Western influences and adaptations. For examp: Hmong now have singing the gospels and prayers in a Hmong-Christian funeral that includes traditional Hmong-centric practices like killing cows=ntaus nyuj hauv qhua, donations=nyiaj tshav ntuj, and giving thanks=ua tsaug. WTF?
That is why Hmong has a too well-known verbage that says, "Ib rab teb. Ib yam txuj." It means, "One town, city, state, village, country, clan, master, student, practitioner, apprentice, one entirely unique method, practice, way, ritual, and/or managed custom." literally. There lies the answer to your question, directly from the horse's mouth - Hmong.
This is why I have been arguing for ages that Hmong need to start standardizing it's language, culture, and customs. Of course, this is asking for the "impossible" I know. Hmong have too many "experts", "elites", and "educated wanna-bes" nowadays to accept or rally a consensus towards this cause imho -
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