Professor Yeung’s research has centred on Asian urban development, urban and regional planning, international development, and China’s modernisation. Drawing on extensive field research across more than 80 countries and 200 cities, he has examined urbanisation, regional development, and inter-city and inter-regional cooperation in Asia and beyond. He has published more than 38 books, including The Asia-Pacific City in the Era of Globalisation, and has organised and directed numerous international research projects and academic conferences, contributing to research collaboration and the training of younger scholars across Asia. His studies of the Lanzhou–Xining–Yinchuan urban belt provided analytical perspectives on regional development in western China, while research on the Hetao area and county economies in northeastern Guangdong informed discussions of regional planning in the Pan-Pearl River Delta. He has also supported higher education and academic exchange on the mainland through library donations, advisory work, and collaboration with universities and research institutions. Through sustained geographical research, university leadership, and engagement with international development and public policy, Professor Yeung has contributed to connecting urban and regional studies with development practice and to the advancement of geography, city planning, and Hong Kong–mainland academic cooperation.