9,000 (2012 SIL).
Sagaing region: Hkamti district, Lahe township, 13 villages, along India border.
Chen (Kyan), Kayu (Kahyu, Kaiyaw, Karyaw, Kayaw). The 2 dialects are closely related. Kayu is reportedly similar to the Chuyo and Gakat dialects of Tase Naga [nst].
Vigorous. All domains. All ages.