Professor Yang’s research has centred on regional science and spatial economics, with particular emphasis on urbanisation, regional development, sustainable development, and the economics of ecological civilisation. His studies of China’s regional development contributed to the development of regional-science research and provided analytical perspectives for regional policy from the 1990s onwards. He has also conducted sustained research on the development of the Zhongguancun Science Park, the Beijing–Tianjin–Hebei region, metropolitan-area integration, and the spatial implications of converting counties into municipal districts. His work has informed academic and policy discussions concerning regional development, urbanisation, and spatial planning. Professor Yang has served on national expert committees concerning development planning, territorial spatial planning, and climate change, and has led more than 100 national and ministerial research projects, including projects under the National Key Research and Development Programme and major projects funded by the National Social Science Fund of China and the National Natural Science Foundation of China. He has published more than 400 papers and books and supervised more than 200 master’s and doctoral students and postdoctoral researchers. His work has received a Second Prize of the National Science and Technology Progress Award, the First Prize of the China Development Research Award, and the China Economic Theory Innovation Award. Through sustained research at the intersection of economics and geography, policy advisory work, and academic institution building, Professor Yang has contributed to connecting spatial-economic analysis with China’s regional development practice and to the advancement of regional science, urbanisation studies, and ecological-civilisation research.