Cai Hongyu, PhD in Law, Tsinghua University; Lecturer, School of International Studies, Beijing Foreign Studies University; Non-resident Fellow, CISS-China Forum, Tsinghua University. He received his Bachelor of Laws from Guangdong University of Foreign Studies in 2019, Master of Laws from Renmin University of China in 2021, and Doctor of Laws from Tsinghua University in 2025. He was a visiting scholar at the University of Lapland, Finland. His main research interests include U.S. diplomacy and security, China–U.S. relations, and crisis management. He has participated in one major project of the National Social Science Fund of China. He has published numerous articles in core academic journals including Contemporary International Relations, Contemporary American Review, Journal of International Security Studies, and Quarterly Journal of International Politics. Some of his articles have been republished by China Social Science Excellence of Renmin University of China. The policy advisory report he co-authored received instructions from relevant leading officials of the central authorities.