Prof. Daniel CW Tsang is a Professor in the Department of Civil and Environmental Engineering at the Hong Kong Polytechnic University and Visiting Professor at the University of Queensland in Australia and Chulalongkorn University in Thailand. He was a Visiting Scholar at Ghent University in Belgium and Stanford University in the US, Senior Lecturer at the University of Canterbury in New Zealand, and Post-doctoral Fellow at Imperial College London in the UK and the Hong Kong University of Science and Technology. Dan’s research group strives to develop low-carbon technologies to achieve carbon neutrality, circular economy, and sustainable waste management. Dan has served as Associate Editor and Editorial Board Member in several prestigious journals, and he was selected as Highly Cited Researchers 2021 in the academic fields of Engineering as well as Environment and Ecology. Dan also served as Chair and Organizer of many international conferences such as 5th Asia Pacific Biochar Conference (APBC2021).