Graduate, University of Hong Kong; studies, Oxford University and Harvard University. 1981, started civil service career as an Administrative Officer; held various positions, including Director of Information Services, Deputy Secretary for Education and Manpower, Deputy Director-General of Trade and Industry as well as Director-General of the Hong Kong Economic and Trade Office in Washington, DC, USA. 2007-12, Secretary for the Environment, overseeing policies on environmental protection, energy, nature conservation and sustainable development. 2012-17, Director of the Chief Executive's Office, assisting the Chief Executive in formulating policies and setting policy goals and priorities. Since July 2017, Secretary for Commerce and Economic Development. Portfolio covers policy areas ranging from trade, commerce to telecommunications and broadcasting, and from promotion of creative industries, intellectual property and consumer protection to boosting inward investment and tourism development.