Ming-sum Tsui is Senior Lecturer in Social Work, Department of Applied Social Sciences, the Hong Kong Polytechnic University where he teaches social work supervision and human service management. Ming-sum has more than twenty years of experience in practising and teaching social work supervision. Before joining the Hong Kong Polytechnic University, he was service supervisor of Development and Health Services at the second largest voluntary social welfare agency in Hong Kong, the Hong Kong Christian Service. More than two decades ago, Ming-sum started his social work career in a community-based...