|Native to||Myanmar, China|
Dai Qingxia (2005:3) reports 5,600 Langsu speakers in China. Many thousands more are dispersed across the eastern edge of Kachin State, Burma.
- Luxi City: Yingpan Township 营盘乡
- Lianghe County: Mengyang Township 勐养乡
- Longchuan County: Bangwai Township 邦外乡 and Jingkan Township 景坎乡
The Langsu people call themselves lɔ̃˧˩ vɔ˧˩ (Chinese: Lang'e 浪峨) (Dai 2003:3; Dai 2010:10)
Sawada (2017) lists the following patois (subvarieties) of Lhaovo.
- Gyanno’ (autonym: kjɛn˧˥noʔ˨˩): spoken in the west side of the N'Mai River in Sawlaw Township.
- Tho’lhang (autonym: tʰaʔ˨˩lo̰˨): spoken in Htawlang and a few other villages in northern Sawlaw Township.
- Lakin (autonym: lăkɛ̰˨): spoken in Lakin village, northern Sawlaw Township.
- Lhangsu (autonym: la̰ŋ˥˧su˥˧; not the same as Langsu 浪速 of Yunnan): spoken in the area between Hkrang Hka and Sanin Hka, which are two tributaries of the Mali Hka. It is spoken in Sumprabum Township, including in the villages of Hting Tsa, N-gawk Hkyet, and Ma Awng.
The Langsong 浪宋 are found in Zaoyang 早阳 in Yunlong County (in the Chinese province of Yunnan) as well as in Baocun 表村, Laomo 老末, and Sancha 三岔. They reportedly speak a highly endangered language that may be possibly related to Langsu.
- Lhao Vo at Ethnologue (18th ed., 2015)
- Hammarström, Harald; Forkel, Robert; Haspelmath, Martin, eds. (2017). "Maru". Glottolog 3.0. Jena, Germany: Max Planck Institute for the Science of Human History.
- 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].
- Sawada, Hideo. 2017. Two Undescribed Dialects of Northern Burmish Sub-branch: Gyannoʔ and Thoʔlhang. Presented at ICSTLL 50, Beijing, China.
- 中国少数民族社会历史调查资料丛刊修订编辑委员会. 2009. 景颇族社会历史调查, p.57. Beijing: Minzu Chubanshe.
- 戴 Dai, 慶廈 Qingxia (2005). 浪速语研究 Langsu Yanjiu [Study of the Maru Language] (in Chinese). Beijing: 民族出版社 Minzu Chubanshe. ISBN 9787105068159.
- Yabu Shirō 藪 司郎 (1988). "A preliminary report on the study of the Maru, Lashi and Atsi languages of Burma." Yoshiaki Ishizawa (ed.), Historical and cultural studies in Burma, 65-132. Tokyo: Institute of Asian Studies, Sophia University.
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