4,000 (Bradley 2007). Ethnic population: 5,000 (2000 D. Bradley).
South Hainan Prefecture; Yaxian (Sanya) County, Yanglan District, Huixin and Huihui villages.
6b (Threatened). Language of recognized nationality: Hui.
None known. Reportedly most similar to Northern Roglai [rog], but very different. Tsat is structurally changed to be like Chinese.
The phonology suggests a history of some independence from other Chamic languages (Maddieson 1991). Their name for themselves is Utsat, for their language Tsat. Huihui or Hui is the Chinese name. Muslim.