Hm Nai (Mandarin: Wunai (唔奈 Wúnài), Cantonese: Ng-nai) is a Hmong-Mien language spoken[2] in western Hunan province, China. There are approximately 5800 people speaking this language, and the number is decreasing.[3] Mao & Li (1997) determined it to be closely related to the Pa-Hng language.
Longhui County: in Huxingshan 虎形山乡, Xiaoshajiang 小沙江乡, Motang 磨塘乡, Dashuitian 大水田乡. The Huxingshan 虎形山乡 dialect is the best documented variety, since it is typically used as the representative datapoint for Hm Nai.
Mao, Zongwu 毛宗武; Li, Yunbing 李云兵 (1997). Bāhēngyǔ yánjiū 巴哼语研究 [A Study of Baheng [Pa-Hng]] (in Chinese). Shanghai: Shanghai yuandong chubanshe.
Meng, Chaoji 蒙朝吉 (2001). Yáozú Bùnǔyǔ fāngyán yánjiū 瑤族布努语方言研究 [A Study of the Bunu Dialects of the Yao People] (in Chinese). Beijing: Minzu chubanshe.
Yang, Zaibiao 杨再彪. 2016. Munaiyu yanjiu 呣奈语研究. Ph.D. dissertation. Changsha: Hunan Normal University 湖南师范大学.