Kam Wing Chan is Professor of Geography at University of Washington, USA. His main research focuses on China’s cities, migration, and the household registration system. He is the author of Cities with Invisible Walls: Reinterpreting Urbanization in Post-1949 China (1994), Urbanization with Chinese Characteristics: The Hukou System and Migration (2019), and 《大国城民:城镇化及户籍改革》(Becoming Urban Citizens: Urbanization and China’s Hukou Reform) (2023). He has served as a Consultant for the World Bank, Asian Development Bank, United Nations, and McKinsey & Co. for various policy projects on China. He has also published many op-eds and commentaries online and in major media. More at: http://faculty.washington.edu/kwchan/