Scholars of ancient and modern times have many interpretations of the "extra" of eight extra-meridian channels

and there is some controversy over the original meaning of "extra". Based on ancient military science literature records of extra and regular thoughts

breaking the traditional thinking of simply examining the word "extra" and puting it into the "extra and regular" as a whole

it was found that there was relativity and unity of opposites between "extra" and "regular"

which leads to the unity of opposites of eight extra-meridian channels system and twelve regular meridians system. Under the premise of referring to the circulation

function and characteristics of regular meridians

by using modern human anatomy and sports medicine theories

this paper studied and deconstructed the theoretical system of eight extra-meridian channels

and explored the systematic three-dimensional logic level of the eight extra-meridian channels from a holistic perspective.