Chashan language

Chashan (autonym: ) 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. 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.

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 (景颇族). The Chashan autonym is  (Echang 峨昌), similar to that of the Achang. More Chashan speakers may be found across the border in Kachin State, Myanmar.