Where did the Tibetan language originate?
The ancestral Proto-Sino-Tibetan language is thought to have originated somewhere in the Himalayan plateau, the source of the great rivers of East and Southeast Asia, including the Yellow, Yangtze, Mekong, Brahmaputra, and Irrawaddy. Scholars hypothesize that this ancestral language split into Proto-Chinese and Proto-Tibeto-Burman around 4,000 BC.