The Development Of The Medieval Yangsheng Rhymes In Datong Dailect

The development of the medieval yangsheng rhymes is verycharacteristic.Not only keeping Mid-Ancient sounds,but also bydifferent dialect borrowing influence the appearance of new soundchanges. the yangsheng rythme finals of Datong dialect get lost butwhether or not exist the nasal compositions is not sure. This paperchooses the development of the medieval yangsheng rhymes inDatong dialect to know whether or not exist the nasal compositionsin Datong dialect and some regular change.The article is divided into five parts : the first part is introduction,introduce the origin of the study, present research achievement, thepurpose and significance of the research. From the second part to thefifth part is the content of the core.According to the category ofrhyme was divided into three parts, each part of the first from asynchronic perspective, through field investigation on this Yangrhyme in Datong dialect phonetic values are summarized. Analysis of some special phonetic phenomenon of sound change Finally, usingthe historical analytic hierarchy process, based on the cognate layertheory and heterologous layer theory for Datong Dialect ancientrhyme the evolution law, demonstrates the Datong Dialect nasal taildisappeared during nasal compositions appear inevitability.