 (Since then, the speech in those regions has evolved into dialects of modern Mandarin).The presence of many archaic features occur in modern Hakka, including final consonants , as are found in other modern southern Chinese varieties, but which have been lost in Mandarin.Laurent Sagart (2002) considers Hakka and southern Gan Chinese to be sister dialects that descended from a single common ancestral language (Proto-Southern Gan) spoken in central Jiangxi during the Song Dynasty.