|ISO 639-3||(included in lsi)|
Chashan 茶山 (autonym: ŋɔ˧˩ tʃʰaŋ˥) is a Burmish language spoken in Pianma Township 片马镇, Lushui County, Yunnan, China, in Xiapianma 下片马, Gangfang 岗房, and Gulang 古浪 villages (Dai, et al. 2009). It is closely related to Lashi, and has 56.3% lexical similarity with Lashi of Lushui County out of a sample of 1,000 vocabulary words (Dai 2010:118).
In Pianma Township, there are 587 Chashan people officially classified as ethnic Lisu. The local people consider the Chashan to be a distinct ethnic group, separate from the Jingpo people (Chinese: 景颇族). The Chashan autonym is ŋɔ˧˩ tʃʰaŋ˥ (Echang 峨昌), similar to that of the Achang. More Chashan speakers may be found across the border in Kachin State, Burma.
- Dai Qingxia [戴庆厦] (2010). The Chashan people of Pianma and their language [片马茶山人及其语言]. Beijing: The Commercial Press [商务印书馆].
- 戴 Dai, 庆厦 Qingxia; et al. (2010). 片马茶山人及其语言 Pianma Chashanren ji qi yuyan [The Chashan nationality and their language of Pianma] (in Chinese). Beijing: 商务印书馆 Shangwu yinshuguan. ISBN 9787100069069.