The text presented here is the final result of a series of versions of our research on the four divisions (or grades) of ancient Chinese (Middle Chinese) :1. (1998) Du chinois archaïque au chinois ancien : monosyllabisation et formation des syllabes tendu/lâche (Nouvelle théorie sur la phonétique historique du chinois), The 31st International Conference on Sino-Tibetan Languages and Linguistics, University of Lund, Swiden, Sept. 30th -Oct. 4th 5. The present text is the enlarged version that was translated into Chinese by Professor SHEN Ruiqing 沈瑞清.
Reading guide :Many thanks to my colleague Alexis Michaud for the care and skill with which he proofread this text and suggested corrections. I remain solely responsible for all decisions on contents and form.Note : For the sake of clarity the new paragraphs that were added in the version translated into Chinese are indicated in blue. Some pages have blank space at bottom to avoid splitting tables over two pages.
2Determining the nature of the four Divisions of the Qièyùn is a fundamental problem in the study of the phonetic history of Chinese. Analyses by Baxter and Pulleyblank make it possible to bring out two major changes from Old Chinese to Middle Chinese: a two-way split of the vowel system, and later the lenition of medial -r-. The use of models drawn from Mon-Khmer voice type register languages made it possible to reconstruct the phonetic bases of the four divisions. Div. I consists of tense rimes, Div. II consists of tense, velarized rimes resulting from medial -r-, Div. III consists of lax/breathy rimes. As for Div. IV, it consists of (non velarized) rimes with the diphthong ie.