obituary zhou1 zu3 mo2 zhou zumo zhou1 zu3 mo2 noted chinese scholar zhou1 zu3 mo2 died peking hospital 14 january 1995 80 years old professor peking university native peking prof zhou1 zu3 mo2 one world greatest experts written sources chinese historical phonology principal works _ wen4 xue2 ji2 _ inquiring learning collection contains important philological essays annotated edition thorough textual collation _ guang3 yun4 _ main written source chinese historical phonology prof zhou1 edition _ guang3 yun4 _ standard