09/1967 – 09/1968

Staff member of the Department of International Organizations and Conferences of the Chinese Ministry of Foreign Affairs (MFA)

09/1968 – 10/1971

Worked in MFA Cadre's School

10/1971 – 09/1972

Staff member of the Department of International Organizations and Conferences of the MFA

09/1972 – 10/1977

Attaché of the Permanent Mission of the People's Republic of China to the United Nations

10/1977 – 07/1980

Staff member of the Department of International Organizations and Conferences of the MFA

07/1980 – 02/1984

Third Secretary, Second Secretary and then First Secretary of the Permanent Mission of the People's Republic of China to the United Nations

02/1984 – 09/1985

Assistant of the Executive Director of International Monetary Fund

09/1985 – 09/1992

Division Chief, Counselor and then Deputy Director General of the Department of International Organizations and Conferences of the MFA

09/1992 – 07/1994

Ambassador and Deputy Permanent Representative of the People's Republic of China to the United Nations

07/1994-02/1996

Director General of the Information Department and spokesman of the MFA

02/1996 – 02/1998

Assistant Minister of Foreign Affairs; Member of the CPC Committee of the MFA

02/1998 – 04/2001

Ambassador Extraordinary and Plenipotentiary of the People's Republic of China to Japan (vice-ministerial level)

04/2001 – present

Under-Secretary-General of the United Nations