Abstract (Rsum franais en bas)The system of the Five Cycles and the Six Qi is one of the major cosmological theories of the traditional Chinese medicine (TCM). The Seven Grand Chapters, incorporated under Tang in the book Suwen of the TCM Bible Huangdi neijing, constitute the original building blocks of this system. By examining the rhymes and taboo characters of the text, the author tries to resolve the millennium-old riddle of their dating and is...