Graduate, Nanjing University, China. Formerly: established and Director-General, Department of Arms Control, Ministry of Foreign Affairs, China, facilitated onsite inspections by experts and visits by UN working groups and rapporteurs, encouraged development of Chinese non-governmental organizations, promoted opening of offices in China by international organizations; representative of Chinese government, in negotiation and review of international treaties on arms control and disarmament such as Treaty on Non-Proliferation of Nuclear Weapons, Comprehensive Nuclear Test Ban Treaty, Chemical Weapons Convention, Biological and Toxin Weapons Convention, and Convention on Certain Conventional Weapons; participated in drafting major arms control and international security resolutions adopted by UN General Assembly and Security Council. Since 2007, current position, responsible for follow-up to major UN summits and conferences, services Economic and Social Council and the Second and Third Committees of the General Assembly, chairs UN Executive Committee, Economic and Social Affairs; 2010, appointed Secretary-General; UN Conference on Sustainable Development, to be held in 2012 in Brazil.