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Survey of the Phenomenon of Laimu ("来母") Reading "t-、t~h-、d-"in Kan Dialect

This article takes some concrete measures to investigate the features of the phenomenon of Laimu("来母")reading" t-?t h-?d-"in Kan dialect,and comes to the conclusion that this phenomenon is neither the preservation of ancient pronunciation,nor the characteristics of the bottom of Kan dialect,but a special change of pronunciation.Also, this article suggests that the study of phonology and dialect should avoid taking the one-side way,but make a concrete analysis of concrete conditions.