Whatever the case, it was something that permeated the entire body from top to bottom and facilitated the unique abilities of the Awakened ones in Faust.
Darius was largely aware that such things also existed on Earth, but Miranda's analysis of the human body of his home planet in conjunction with all the knowledge he had of Faust was the following:
Basically, at one point, humans on Earth must have had witches, wizards, cultivators, ninja, and all those romanticized things, but something had occurred to cripple their descendants' meridian networks.
Miranda was of the opinion that this must have happened abruptly, leading to large consequences. Darius doubted this, his assumption was it must have occurred over time, slowly stripping humans of these unique persons such that each new generation had fewer and fewer until they became myth, but we still collectively "knew" they existed.