▁first ▁to ▁"[ appro ach ] ▁classical ▁texts ▁from ▁the ▁stand point ▁of ▁a ▁carefully ▁defined ▁gram mat ical ▁framework , ▁strictly ▁and ▁rig or ously ▁applied ▁in ▁analysis ". ▁ ▁Early ▁in ▁his ▁time ▁at ▁Washington , ▁Ser ru ys ▁focused ▁his ▁research ▁on ▁Chinese ▁bronze ▁ins cri ptions , ▁but ▁later ▁became ▁eng ross ed ▁in ▁the ▁study ▁of ▁oracle ▁b one ▁script . ▁ ▁His ▁research ▁cul min ated ▁in ▁his ▁article ▁" St ud ies ▁in ▁the ▁Language ▁of ▁the ▁Shang ▁Oracle ▁In scri ptions ", ▁published ▁in ▁T ' ou ng ▁Pa o ▁in ▁ 1 9 7 4 , ▁which ▁is ▁considered ▁" a ▁corner stone ▁of ▁[ the ] ▁field " ▁among ▁Western ▁sch ol ars . ▁ ▁He ▁retired ▁in ▁ 1 9 8 1 ▁due ▁to ▁a ▁policy ▁that ▁required ▁profess ors ▁to ▁ret ire ▁at ▁age ▁ 7 0 , ▁which ▁was ▁common ▁at ▁U . S . ▁univers ities ▁in ▁the ▁ 2 0 th ▁century . ▁ ▁Ret irement ▁and ▁later ▁life ▁The ▁C . I . C . M ▁had ▁no ▁chapter house ▁in ▁the ▁Pacific ▁North west , ▁so ▁Ser ru ys ▁decided ▁to ▁move ▁to ▁Taiwan ▁after ▁his ▁ret irement ▁from ▁the ▁University ▁of ▁Washington . ▁ ▁He ▁strugg led ▁to ▁adjust ▁to ▁life ▁in ▁Taiwan ▁and ▁began ▁having ▁some ▁health ▁problems , ▁and ▁so ▁returned ▁to ▁the ▁U . S . ▁in ▁ 1 9 8 5 . ▁ ▁In ▁ 1 9 9 4 , ▁the