Vietnam Dai-nung Language With China Southern Zhuang Dialect Phonetic Conparison Research

China and Vietnam are neighbors connected by the same mountainsand rivers. On their boarder areas inhabit a vast number of Zhuang Donggroup people. In addition, their distribution is geographically integrated.Zhuang people is the largest Chinese minority group while Tay is thesmallest Vietnam minority group. Similarly, Vietnam’s Tay is also smallin number. It is considered that Day-nung people and Zhuang peopleshare the same origin, especially those groups living on the boarder ofChina and Vietnam who speak southern Zhuang dialect. Given theseparation of boundary, what kind of features those two languages haverespectively? What is the rule of Day-nung’s formation, development andevolvement? What are the reasons behind them? The research on the localfeature of language caused by its constant evolvement is of great value.Based on morphology theory and from the perspective of thesynchronic performance and historical evolution of Day-nung andZhuang language, this article analyzes the rule and characteristics of theevolvement of Zhuang and Day-nung language, identifying the process ofthe development and change of the the Tai branch central group as well asthe causes for its morphology development and change. Consequently,this article will conclude the morphological evolvement rule of the Taibranch central group. This passage is consisting of the following sixparts.The first chapter: the author will briefly introduce the basicinformation of Zhuang, Day and Nung people, the research fruit and theresearch situation relevant to the author’s research as well as the value ofthe author’s research.The second chapter: it focuses on the analysis of the phoneticsystem of Day and Zhuang language, which can serve as the languagematerial basis for the following comparison of those two languages.The third chapter: the author introduces the synchronic comparison of the initial consonant、vowel、tone of vowel between Day-nung andZhuang language.,From which to reveal the commonalities anddifferences of Phonetics in the Tai branch central group.The fourth chapter:the author makes the diachronic comparison ofthe initial consonant、vowel、tone of vowel between Day-nung andZhuang On this basis, the author will discuss the development of the Taibranch central group and identify the evolvement rule and characteristicsof their language development.The fifth chapter: the author will conduct the macro analysis of thereasons for language evolvement, its evolvement process and ways.Therefore, the evolvement rule of Day-nung and Zhuang languagedialects in the south of China can be concluded consequently.The sixth chapter: the author will summarize the main point of hisresearch and its limits, identifying problems necessary for a furtherresearch.