Definition of "Kmhmu"

There are more than a hundred such groups, including the Karen of Thailand and Burma; the Kachin in Burma; the Akha, the Lahu, and the Lisu in Thailand; the Hmong, the Kmhmu, and the Yao in Laos; and the Nùng and the Lati in Vietnam.

2011, Terry Miller, Sean Williams, The Garland Handbook of Southeast Asian Music, page 303