Sagart suggests that Austro-Tai is ultimately related to the Sino-Tibetan languages and has its origin in the Neolithic communities of the coastal regions of prehistoric North China or East China.
Sagart suggests that Austro-Tai is ultimately related to the Sino-Tibetan languages, forming a Sino-Austronesian family. The Proto-Sino-Austronesian speakers would have originated from the Neolithic communities of the coastal regions of prehistoric North China or East China.