Field Theory, Parity.

1954~1978 Lecturer, Associate Professor, Professor, Peking
University
1957~1960 Researcher, Joint Institute for Nuclear Research,
Dubna, Moscow
1979~ Professor, Institute of Theoretical Physics, Chinese
Academy of Sciences
1980~1981 Visiting Professor, VPI & U, Virginia U.S.A.
1983~1990 Director, Institute of Theoretical Physics,
Chinese Academy of Sciences
1984~2000 Vice President, President, Chinese Academy of
Sciences
1987 Foreign Member, National Academy of Sciences, U.S.A.
1988 Foreign Member, Soviet (Russian) Academy of Sciences
1989 Foreign Member, Czechoslovak Academy of Sciences
Foreign Member, Bulgarian Academy of Sciences
1992 Foreign Member, Mongolian Academy of Sciences
1992 Vice President, Third World Academy of Sciences
1993~1996 Vice Chairman, IUPAP
1994 Foreign Member, Romanian Academy of Sciences