|Cantonese is unique among non-Mandarin regional languages in having a written colloquial standard, used in Hong Kong and by non-Standard Mandarin speaking Cantonese speakers overseas, with a large number of unofficial characters for words particular to this variety of Chinese. By contrast, the other regional languages do not have such widely-used alternative written standards. Written colloquial Cantonese has become quite popular in online chat rooms and instant messaging, although for formal written communications Cantonese speakers still normally use standard written Chinese.
In Hunan, some women wrote their local language in N Shu, a syllabary derived from Chinese characters. The Dungan language, considered a dialect of Mandarin, is also nowadays written in Cyrillic, and was formerly written in the Arabic alphabet, although the Dungan people live outside China.
Main article: Chinese character