The 2011 National census lists 123 languages spoken as a mother tongue (first language) in Nepal. Most belong to the Indo-Aryan and Sino-Tibetan language families.. The official working language at federal level is Nepali, but the constitution provisions each province to choose one or more additional official working languages. The Language Commission of Nepal on 6 Sept …

The Sino-Tibetan War [citation needed] (Chinese: 康藏邊界糾紛; pinyin: Kāngcáng biānjiè jiūfēn, lit.Kham–Tibet border dispute) was a war that began in 1930 when the Tibetan Army under the 13th Dalai Lama invaded [citation needed] Chinese-administered eastern Kham region (later called Xikang), and the Yushu region in Qinghai, over disputes regarding monasteries.