見系二等文白讀在漢語方言的分佈很廣，大約可分為六種類型：長江沿岸、瀏陽、萬榮、汾西、文榮、廈門。這六型具體而微反映漢語方雷發展南北異趣：華北似乎有中原核心與邊緣（或外圍）的差異，華南似乎有長江沿岸與非沿岸的分野。黃河以北與長江以南各有其保守與創新。由於文讀係一波一波擴散，甲方言的白讀在乙方雷可能仍為文讀，這或許與文教勢力大小有關。漢語語音史上、、顎化*是一個賡續不絕的過程，舊說中的年代斷限往往受韻書束縛，不足採信。 The colloquial/literary distinction in the velar initials of the Middle Chinese 2nd division thyme categories is one of the most widespread phe-nomena in Chinese dialects. This phenomenon can be divided into the follow-ing six types: (1) Yangtze River type: C. k- and L.tφ,. This kind of distinction is found in large cities along the River such as Suzhou, Yangzhou, Wuhan and Changsha. (2) Liuyang in Hunan province: C.k- and L. ki-. (3) Wanrong in Shanxi province: C. ts- and L.tφ-.(4) Fenxi in Shanxi province: C. t-and L. tφ-.(5) Wenrong in Shandong province: C. ts- and L. ki-. (6) Xiamen in Fujian province: both colloquial and literary k-. These six types reflect the discrep-ant developments between the northern and southern Chinese dialects in miniature; the southern Chinese dialects are more conservative than the northern Chinese dialects. In the north, there seems to be a distinction between the core of the central plain and its periphery. In the south, there seems to be a distinction between those which are near the Yangtze River and those which are far from the River. The core of the central plain serves as the epicenter of the palatalization in question, While the wave-like spread has reached most Chinese dialects and indeed replaced their old readings in large scale, the southern Chinese remain resistant to such change-Min, Hakka, Yue and southern Wu dialects have not been affected by such north-ern intrusions. Palatalization is an incessant process throughout Chinese history,and it is not easy to date this phonetic event.