Mosuo language. The Na who use this dialect, on the basis of historical tradition, are customarily called the Mosuo; the English transliteration of this name is ‘Moso’. Most of China's 40,000-60,000 or Mosuo live in Yunnan and Sichuan province around Lugu Lake, a fertile farming area, and the town of Yongning. k. While their customs have become renowned throughout the world, their language has not received comparable attention. 2016. It has long been regarded as purely oral without orthography. a. 2011. e. However, newly found hieroglyphics May 17, 2023 · Mosuo language is an official dialect used by the Mosuo ethnic minority group in Southwest China.