Lhaovo (the Burmese name: လော်ဝေါ်), also known asMaru (မရူ) andLangsu (the Chinese name: 浪速), is aBurmish language spoken in Burma and by a few thousand speakers in China.

Dai Qingxia (2005:3) reports 5,600 Langsu speakers in China. Many thousands more are dispersed across the eastern edge ofKachin State, Myanmar.

• Luxi City: Yingpan Township (ယင်းဖန်မြို့နယ်, 营盘乡)
• Lianghe County: Mengyang Township (မယ်ညန့်နယ်, 养乡)
• Longchuan County: Bangwai Township (ဖန်ဝိုင်မြို့နယ်, 邦外乡) and Jingkan Township (ကျင်ခန်မြို့နယ်, 景坎乡)

The Langsu people call themselveslɔ̃³¹vɔ³¹ (Chinese:Lang'e 浪峨)^[2][3]

The standard Lhaovo dialect is that of the Dago’ (tăkoʔ) hill area, on the east side ofN'Mai River valley inKachin State.^[4]

Sawada (2017) lists the following patois (subvarieties) of Lhaovo.^[4]

• Gyanno’ (autonym:kjɛn35noʔ21): spoken in the west side of the N'Mai River inSawlaw Township.
• Tho’lhang (autonym:tʰaʔ21lo̰22): spoken inHtawlang and a few other villages in northern Sawlaw Township.
• Lakin (autonym:lăkɛ̰22): spoken inLakin village, northern Sawlaw Township.
• Lhangsu (autonym:la̰ŋ53su53; 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 inSumprabum Township, including in the villages ofHting Tsa, N-gawk Hkyet, andMa Awng.

The Langsong (浪宋) are found in Zaoyang (早阳)^[5] inYunlong County (in the Chinese province ofYunnan) as well as in Baocun (表村),^[6] Laomo (老末), and Sancha (三岔).^[7][8] They reportedly speak a highly endangered language that may be possibly related to Langsu.

Lhao Vo has the following consonant sounds:^[9]

• Sounds /p, t, k, ʔ, m, n, ŋ, j/ can all be heard in final position.
• /ʔ/ is only written in final position.

There is a distinction among creaky vowel sounds:^[9]

• /i, ḭ/ can also range to [ɪ, ɪ̰].
• Vowels /e, o/ when preceding a word-final /-ŋ/ can also be heard as nasalized [ẽ, õ].

When preceding a final glide /-j/, each vowel has the following allophones:

Lhao Vo has threelexical tones: high, low and falling. Low tone may be a different analysis of creaky vowels. In Latin script, falling tone is unmarked, e.g.⟨lo⟩ etc.; low tone is⟨lo꞉⟩ etc., and high tone is⟨loˮ⟩ etc. (or⟨lobʼ⟩ etc. with a finalb, d, g). Final glottal stop is written⟨lo,⟩ etc. in falling tone,⟨lo;⟩ etc. in low tone, and⟨loʼ⟩ in high tone.^[10]

• Consonant Ear Training and Tones
• Maru fieldwork of John Okell from 1969
• Lhaovo language site

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