Somewhere between 5th-3rd century BC first information on Eight Extraordinary meridians in Chinese culture was found in the Huangdi internal classic (Huangdi Neijing Su Wen) and Ling Shu. There was no idea on three central meridian systems. From 7th and 8th century Tantric Buddhism (Mìzōng) appeared in China and brought attention on central and side meridians. Nine Segment Buddhist Breathing, for example, shows further development of this three-fold system- instead of ida and pingala mixture this system uses three independent lines- the, central, left and right line (Liang, Shou-Yu; Wu, Wen-Ching, 1997. Qigong Empowerment: A Guide to Medical, Taoist, Buddhist, and Wushu Energy Cultivation. Way of the Dragon Pub. Page 137)
By the time of daoist Frantzis Kumar some daoists have become eclectics, accepting buddhist theories in their own philosophical system. In 2001 the book with such eclectic meridian map was published by Frantzis Kumar. He writes:
“Three main energy channels, or paths of flow- left, right and central channels … – begin at conception and remain within a person throughout life. … The left, right and central channels, however, according to Taoist chi kung theory, come into existence before the acupuncture meridians and create these meridians during fetal evelopment. … All three … are located in the center of the body…” (Bruce Kumar Frantzis, 2001. The Great Stillness: Body Awareness, Moving Meditation & Sexual Chi Gung. North Atlantic Books, Page 265.)
It is interesting how these lines of Frantzis Kumar are connected with axiatonal lines. Even if Kumar’s lines are prenatal to 12 meridians (?), axiatonal lines are prenatal to Kumar’s lines, because the influence of axiatonal lines goes from outside to the middle in accordance with primordial angelic formations (Sanqi). Lines of Frantzis Kumar are close to the point of condensation from these axiatonal lines. Inner meridian, for example, is influenced by central arm axiatonal lines, middle axiatonal line and part of side-frontal axiatonal line (A). Side meridian is influenced by upper and partly by lower silhouette/lateral lines and upper part of side-frontal axiatonal lines (B).