Na language explained

Na (or Narua, Mosuo) is a language of the Naish subbranch of the Naic group of the Sino-Tibetan languages.

Varieties

Yongning Na, which is spoken in Yongning Township, Ninglang County, Lijiang, Yunnan, China, has been documented by Jacques and Michaud (2011).^[1]

Lataddi Narua is notable for having only two tonal levels.^[2]

/t, tʰ, d, n, l/ can be heard as [ʈ, ʈʰ, ɖ, ɳ, ɭ] when preceding vowel sounds /ɯ, u, v̩, ɤ, æ/.
/p, pʰ, b, m, w/ can be heard as [ʙ̥, ʙ̥ʰ, ʙ, ɱ, v] when preceding vowel sounds /ɯ, u, v̩/.
/ɣ/ can also be heard as uvular [ʁ] in word-initial position.
/w, h/ is also heard as voiceless [w̥, x] in free variation.
/n/ is heard as velar [ŋ] when before velar stops.
[ʔ] is heard in initial position before vowels.^[3]

	Front	Central	Back
Close	pronounced as /link/		pronounced as /link/	pronounced as /link/
Mid	pronounced as /link/	pronounced as /link/	pronounced as /link/	pronounced as /link/
Open	pronounced as /link/, pronounced as /link/		pronounced as /link/
Syllabic			pronounced as /link/

/ɯ/ can be heard as [ɨ] in syllable-initial position and as retroflex [ɻ̩] when after retroflex consonants.^[4]

Jacques, Guillaume, and Alexis Michaud. 2011. "Approaching the historical phonology of three highly eroded Sino-Tibetan languages." Diachronica 28:468-498.
Dobbs, Roselle, and La Mingqing. 2016 "The two-level tonal system of Lataddi Narua." Linguistics of the Tibeto-Burman Area, Vol. 39:1 (2016), 67–104.
Book: Lidz, Liberty A. . A Descriptive Grammar of Yongning Na (Mosuo) . University of Texas at Austin . 2010.
Book: Zhenhong, Yang . An overview of the Mosuo language . 2009 . Linguistics of the Tibeto-Burman Area 32 . 1–43.