Wenfang Tang is Presidential Chair Professor and Dean of School of Humanities and Social Science at the Chinese University of Hong Kong, Shenzhen. His research interests include public opinion survey, political culture, and mass politics. His book Populist Authoritarianism: Chinese Political Culture and Regime Sustainability (OUP, 2016) won the CHOICE Best Academic Title Award. Ying Xia is Professor and Chair in the Department of Political Science at Sun Yat-sen University. Her research and publications focus on social movement and mass politics in Hong Kong.