In Pianma Township, there are 587 Chashan people officially classified as ethnicLisu. The local people consider the Chashan to be a distinct ethnic group, separate from theJingpo people (景颇族). The Chashan autonym isŋɔ³¹tʃʰaŋ⁵⁵ (Echang 峨昌), similar to that of theAchang. More Chashan speakers may be found across the border inKachin State,Myanmar.
Dai, Qingxia 戴庆厦 (2010).Piànmǎ Cháshānrén jí qí yǔyán片马茶山人及其语言 [The Chashan People of Pianma and Their Language] (in Chinese). Beijing: Shangwu yinshuguan.ISBN9787100069069.