26,700 in Laos (2005 census). Population total all countries: 82,300.
East Savannakhet Province, Sepone district. Also in Viet Nam.
Leun (Kaleu, Leung), Tri (Chali, So Tri, So Trii). Partially intelligible with Western Bru [brv] of Thailand. Related to Khua [xhv]. The Mangkong dialect in Viet Nam and eastern Laos is a dialect of Eastern Bru, different linguistically from the Mangkong that are the same as So [sss] of Thailand. Mangkong is also an ethnic group.