DAI Hangcheng is Assistant Professor and Chairman at Department of Environmental Management, head of the Laboratory of Energy & Environmental Economics and Policy (LEEEP), College of Environmental Sciences and Engineering; Assistant Professor, Institute for Global Health and Development. His research focuses on green & low-carbon transformation and human & planetary health at the local, national and global scales. By developing and applying the state-of-the-art IMED model, key questions are explored on the mitigation costs of achieving ambitious climate targets and their co-benefits on improvements in air pollution, human health and resource efficiency. Ranked as the World's Top 2% most-cited scientists released by Stanford University in 2020. The main publications, including 8 ESI 1% highly cited papers, are on energy economics and policy related journals. Dr. Dai serves as the Lead Author of the Global Environment Outlook Sixth Edition (GEO-6) for Cities, Contributing Author of the IPCC 6 th Assessment Report, Global Burden of Disease (GBD) Collaborator, Standing Committee Member of Branch of Ecological and Environmental Systems Engineering, Systems Engineering Society of China, and Committee Member of City Air Integrated Management and Low Carbon Action Partnership of China.