中華民國外交部

Representative, Taipei Representative Office in the European Union and Kingdom of Belgium
　(2008–2009)
Director-General (Title of Ambassador conferred), Délégation Culturelle et Economique de Taipei - Bureau de Genève
　(2003–2008)
Deputy Representative, Taipei Economic and Cultural Representative Office in the United States (TECRO)
　(1999–2003)
Counselor (in charge of the Department of North American Affairs), Ministry of Foreign Affairs
　(1996–1999)
Director, Public Affairs (Congressional Liaison) Division, Taipei Economic and Cultural Representative Office in the United States (TECRO)
　(1994–1996)
Director, Secretariat (Political Affairs) Division, Coordination Council for North American Affairs (CCNAA), Office in USA
　(1993 -1994)
Visiting Adjunct Professor of International Studies, University of Kansas, Lawrence, Kansas USA
　(1992–1993)
Director-General, Coordination Council for North American Affairs (CCNAA), Office in Kansas City, USA
　(1991–1993)
Assistant Director-General (in charge of the First Section, Department of North American Affairs), Ministry of Foreign Affairs
　(1988–1991)
Advisor, Republic of China Delegation to the 18th Annual Convention of the Asian Development Bank, Bangkok, Thailand
　(1985)
Staff Consultant for Congressional Liaison, Coordination Council for North American Affairs (CCNAA), Office in USA
　(1982–1988)
Research Associate, School of Law, University of Maryland, Baltimore USA
　(1981–1982)
Executive Editor, Chinese Yearbook of International Law and Affairs
　(1981–1982)
Pre-Doctoral Fellow, Foreign Policy Research Institute (FPRI), Philadelphia USA
　(1980–1981)

“The Issue of US Arms Sales and Peking’s Policy toward Taiwan” (Taipei: San Min Bookstore, 1986)

“Is Peking’s Claim over Taiwan Internationally Recognized?” Monograph Series of the Asia and World Forum (Taipei, 1984)

“The Washington-Peking Controversy over US Arms Sales to Taiwan: Diplomacy of Ambiguity and Escalation”, The Chinese Yearbook of International Law and Affairs, 1982

“The Taiwan Issue in Peking’s Foreign Policy during the 1970’s, A Systematic Review”, The Chinese Yearbook of International Law and Affairs, 1981

“Peking’s Policy Toward Taiwan in the 1970’s: A Study from the Strategic Perspective” (Ph.D. Dissertation, University of Pennsylvania, Philadelphia, USA 1981)