Austroasiatic-speaking groups in southern China (such as the Wa and Blang in Yunnan) predominatly carry the same Mainland Southeast Asian Neolithic farmer ancestry, but with additional geneflow from northern and southern East Asian lineages that can be associated with the spread of Tibeto-Burman and Kra-Dai languages, respectively.
ˌɔːstɹoʊsɪˈæɾɪkspˈiːkɪŋ ɡɹˈuːps ɪn sˈʌðɚn tʃˈaɪnə sˈʌtʃ ɐz ðə wˈɑː ænd blˈæŋ ɪn jˈʌnən pɹɪdˈɑːmɪnˌætli kˈæɹi ðə sˈeɪm mˈeɪnlənd sˈaʊθiːst ˈeɪʒən nˌiːoʊlˈɪθɪk fˈɑːɹmɚɹ ˈænsɛstɹi, bˌʌt wɪð ɐdˈɪʃənəl dʒˈɛnɪflˌoʊ fɹʌm nˈɔːɹðɚn ænd sˈʌðɚn ˈiːst ˈeɪʒən lˈɪnɪɪdʒᵻz ðæt kæn biː ɐsˈoʊsɪˌeɪɾᵻd wɪððə spɹˈɛd ʌv tɪbˈɛɾoʊbˈɜːmən ænd kɹˈɑːdˈaɪ lˈæŋɡwɪdʒᵻz, ɹᵻspˈɛktɪvli.