Studies on historical phonetic change of Chinese is traditionally called Chinese phonology in China.

汉语历史语音变化的研究，在我国传统称为音韵学。

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Discover the form procession of the historical phonetic change via reviewing the contemporary phonetic change and enrich the research of the historical language.

通过对共时音变的考察揭示历时音变的形成过程，丰富了历史语言学的研究。

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Descriptive sound change consists of changes in sound flow, sound position and some other non-phonetic aspects while historical phonetic change is divided into two subtypes.

描写音变又包括语流音变、位置音变与非语音原因的音变；历史音变则分为有规律的演变与特殊的变化两小类。

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