Professor Junsen Zhang obtained his PhD in economics in 1990 and is currently Wei Lun Professor of Economics in the Department of Economics, Chinese University of Hong Kong. He is a Fellow of the Econometric Society. His research (both theoretical and empirical) has focused on the economics of family behaviour, including crime, fertility, marriage, education, intergenerational transfers, marital transfers, gender bias, and old-age support (pensions). He also works on family-related macro issues, such as ageing, social security, and economic growth. Using quantitative methods and many data sets from different countries (regions), either micro or macro, he has studied economic issues in Canada, USA, The Philippines, Taiwan, Hong Kong, as well as mainland China. Prof. Zhang has published over 80 papers in major refereed international journals. Many of them were published in leading economics journals such as Journal of Political Economy, Review of Economic Studies, Economic Journal, Review of Economics and Statistics and International Economic Review, or in leading field top journals such as Journal of Labor Economics, Journal of Public Economics, Journal of Development Economics, Journal of Human Resources, Journal of International Economics, and Journal of Population Economics. He has been Editor of the Journal of Population Economics since 2001, and had been the President of the Hong Kong Economic Association from 2007 to 2011. He is currently a member of Manpower Development Committee of the Labour and Welfare Bureau in HKSAR. He was a member of the Commission on Strategic Development (the Committee on Economic Development and Economic Cooperation with the Mainland), Hong Kong Government, 2005-2007.