omena ▁to ▁the ▁Study ▁of ▁Chinese ▁Dia lect s ▁of ▁Han ▁Time ▁According ▁to ▁F ang ▁Y en ", ▁a ▁study ▁of ▁the ▁F ang yan , ▁an ▁ancient ▁Chinese ▁dialect ▁dictionary ▁compiled ▁in ▁the ▁ 1 st ▁century ▁AD ▁by ▁Yang ▁X ion g . ▁ ▁After ▁receiving ▁his ▁Ph . D ., ▁Ser ru ys ▁received ▁a ▁G ug gen heim ▁Fellow ship ▁allowing ▁him ▁to ▁continue ▁working ▁on ▁his ▁studies ▁of ▁the ▁F ang yan ▁for ▁two ▁years , ▁resulting ▁in ▁his ▁ 1 9 5 9 ▁book ▁The ▁Chinese ▁Dia lect s ▁of ▁Han ▁Time ▁According ▁to ▁F ang ▁Y en . ▁ ▁Te aching ▁ ▁In ▁ 1 9 6 2 , ▁Ser ru ys ▁left ▁Ber keley ▁to ▁take ▁up ▁a ▁position ▁as ▁director ▁of ▁the ▁Chinese ▁program ▁at ▁Ge or get own ▁University ' s ▁Institute ▁for ▁L anguages ▁and ▁L ingu istics . ▁ ▁He ▁taught ▁there ▁for ▁three ▁years ▁until ▁ 1 9 6 5 , ▁when ▁he ▁was ▁offered ▁a ▁professor ship ▁in ▁early ▁Chinese ▁language ▁at ▁the ▁University ▁of ▁Washington ▁by ▁Li ▁F ang - K ue i . ▁ ▁Ser ru ys ▁accepted , ▁and ▁was ▁a ▁professor ▁at ▁Washington ▁for ▁ 1 6 ▁years . ▁ ▁Ser ru ys ▁re called ▁his ▁time ▁at ▁Washington ▁as ▁" the ▁happ iest ▁of ▁his ▁life ", ▁teaching ▁courses ▁on ▁Class ical ▁Chinese ▁and ▁the ▁development ▁of ▁Chinese ▁characters . ▁ ▁Ser ru ys ' ▁Class ical ▁Chinese ▁courses ▁were ▁some ▁of ▁the