The history of Chinese can be studied by using Yayan(雅言)as materials,as well as ancient di-alects with many Tongjia(通假)characters.By using Tongjia characters in the ancient dialects as materials,the first person in Old Chinese can be reconstructed as*ŋGa which changed to*ŋa in Zhou Dynasty,and there are*Ga,*qha,ga,ka and other sound changes in ancient dialects.The first person in Tibetan-Burmese has the same sound change chain as Old Chinese.The emphatic form of the first person in Old Chinese can be reconstructed as*-al,and the humble form can be reconstructed as*-la.
Old ChineseYayan(雅言)ancient dialectsfirst personsound change chainemphat-ic formhumble form