Bobai is a
Yue Chinese dialect spoken in
Bobai County,
Guangxi
Guangxi (; ; Chinese postal romanization, alternately romanized as Kwanghsi; ; za, Gvangjsih, italics=yes), officially the Guangxi Zhuang Autonomous Region (GZAR), is an Autonomous regions of China, autonomous region of the People's Republic ...
. It was documented by the Chinese linguist
Wang Li, a native speaker, and is well known for its tone system.
Tone
Bobai dialect is widely cited as having the most tones of any variety of Chinese, though in fact it only has six, the same as most Yue dialects. The reason for the claim is that Bobai makes a four-way tonal distinction in checked syllables, whereas most other Yue dialects have three: In Bobai, both the lower and upper entering tone is split (8a and 8b as well as 7a and 7b), whereas in Cantonese only 7 is split; other dialects with an 8 split are neighboring
Yangjiang and
Pinghua
Pinghua (; Yale romanization of Cantonese, Yale: ''Pìhng Wá''; sometimes disambiguated as /) is a pair of Sinitic languages spoken mainly in parts of the Guangxi, Guangxi Zhuang Autonomous Region, with some speakers in Hunan province. Pinghua ...
, though in the latter at least 7 is not split, and 8 split along different lines.
Tones 7b and 8a occur with long vowels, 7a and 8b elsewhere.
References
Yue Chinese
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