:: brown text means unrevised translation or incomplete work ::
NB: the author uses the words "channel", "meridian" and "vessel" as synonyms to define the system of lines, tubes or slices transporting the undemonstrated energy called Qi (pronounce "tchi") to all parts of the body. Anyway he considers "meridian" more suitable for scientific speech and literature, also because it is already employed in other fields of knowledge as in geography and morphogenesis.