ISO 639-3: buh. Mao (2007) describes 2 dialects, Xiaozhai (小寨) and Huangluo (黄落), which are both spoken in Longsheng County (龙胜县), Guangxi, China. There is little variation between the two dialects. The one used here is the Xiaozhai dialect.
The Xiaozhai Younuo tones are: