The Labiodentalization of [ts], [ts‘], [s] in Ningyang Dialect

This paper aims to analyze the Labiodentalization of the retroflexes[ts],[ts‘],[s]in Ningyang dialect.From the general knowledge of phonology,this paper will firstly focus on the introduction of Ningyang dialect and the articulation of these three sounds.Then,with the results from the field work,the labiodentalization of[ts],[ts‘],[s]is explained from two aspects,one is the assimilation of the vowel[u],the other is the hierarchical change of phonology.This study concludes with the reason of the labiodentalized process of[ts],[ts‘],[s]in Ningyang dialect over time,and points out a further trend of this kind of phonological change.