Do you mean the Mosuo of Yunnan? https://en.wikipedia.org/wiki/Mosuo https://en.wikipedia.org/wiki/Mosuo Another interesting prehistoric tradition still alive

Do you mean the Mosuo of Yunnan? https://en.wikipedia.org/wiki/Mosuo https://en.wikipedia.org/wiki/Mosuo Another interesting prehistoric tradition still alive in Yunnan but which has almost died out is cliff burial - https://en.wikipedia.org/wiki/Hanging_coffins https://en.wikipedia.org/wiki/Hanging_coffins - recently I searched for and found the sole remaining area in which it is practiced across continential Eurasia in a remote part of eastern Yunnan.