Director Institute of Electronics 1961-1964. Director Institute of Acoustics 1964-1966, since 1979. In political disgrace 73.
Chairman Federation Returned Overseas Chinese 1985, Acoustical Society 1985.
Director Department, of Mathematics, and Physics, Academy, of Sciences since 1985. President Society of Instruments and Meters 87, Honorary President April since 1987.
Presidium CPPCC since 1983.