Until 1969 he worked on a dissertation on the novel Nieh - Hai Hua by Tseng - P'u ( 1905 ) .
After attending school in Bremen , Ruetz studied Sinology , with Japanology and Journalism as subsidiary subjects , in Freiburg , Munich and Berlin .
Until 1969 Ruetz worked on a dissertation on the novel Nieh - Hai Hua by Tseng - P'u ( 1905 ) .
After attending school in Bremen , Ruetz studied Sinology , with Japanology and Journalism as subsidiary subjects , in Freiburg , Munich and Berlin .