 It can be traced back to a Taoist school named "Hunyuan", from the concept of "hunyuan" ("original chaos") that existed before "hundun" ("still chaos") and is the beginning of primordial "qi" ("yuanqi") according to some Taoist cosmologies.Other possible origins go back to the entry of Maitreya beliefs into China.These concepts became part of the folk tradition and were incorporated in the sect "milieu".