Initials /m,ŋ/ may also be heard as prenasal [mb,ŋɡ] in free variation. When the two initials are followed by non-nasalized rimes, they can be heard as voiced plosives [b,ɡ].
Palato-alveolar sounds /tʃ,tʃʰ,ʃ/ can also be heard as alveolo-palatal sounds [tɕ,tɕʰ,ɕ] in free variation among speakers.
The entering tones in the Sanming dialect do not have any entering tone coda (入聲韻尾) such as /-ʔ/, /-p̚/, /-t̚/ and /-k̚/. This feature is quite different from many other Chinese dialects.
Notes
^Min is believed to have split from Old Chinese, rather than Middle Chinese like other varieties of Chinese.[1][2][3]
References
^Mei, Tsu-lin (1970), "Tones and prosody in Middle Chinese and the origin of the rising tone", Harvard Journal of Asiatic Studies, 30: 86–110, doi:10.2307/2718766, JSTOR2718766
吳, 瑞文 (Rui-Wen Wu) (2013). On the Grammatical Functions and Grammaticalization of tʰe5 in the Sanming Dialect [論三明方言tʰe5的語法功能及其語法化]. Language and Linguistics [語言暨語言學].