Northern Min (simplified Chinese: 闽北; traditional Chinese: 閩北; pinyin: Mǐnběi) is a group of mutually intelligible[citation needed] Min varieties spoken in Nanping prefecture of northwestern Fujian.
Early classifications of varieties of Chinese, such as those of Li Fang-Kuei in 1937 and Yuan Jiahua in 1960, divided Min into Northern and Southern subgroups.
[5][6] However, in a 1963 report on a survey of Fujian, Pan Maoding and colleagues argued that the primary split was between inland and coastal groups.
[8][9] According to the Language Atlas of China, Northern Min varieties are spoken throughout the counties of Wuyishan (formerly Chong'an), Jianyang, Jian'ou, Zhenghe and Songxi, in the southern part of Pucheng County and the northeastern part of Shunchang County, and in Yanping District except for the Nanping dialect of the urban area of Nanping, which is an island of an isolated Mandarin dialect of uncertain affinity.
[12][13][14] In Northern Min dialects, these initials have a different tonal development from other stops and affricates, though the details vary between varieties.