Dr Chang Sun is Associate Director of the APEC Study Center in Hong Kong, as well as Assistant Professor in the HKU Business School at the University of Hong Kong (HKU). He obtained his bachelor’s degree from Tsinghua University and a PhD in economics from Princeton University. He joined the HKU Business School and the Department of Politics and Public Administration in August 2017. His research concerns the impact of globalization, especially the patterns and consequences of multinational production.

Representative Publications:

• "Internal Migration, Remittances and Economic Development", with Xiameng Pan, Journal of International Economics, 2024, Vol 147.
• "The Economic Costs of Trade Sanctions: Evidence from North Korea", with Jihee Kim, Kyoochul Kim and Sangyoon Park, Journal of International Economics, 2023, Vol 145.
• "Uncertainty, Imperfect Information and Learning over the Firm's Life Cycle", with Cheng Chen, Tatsuro Senga and Hongyong Zhang, Journal of Monetary Economics, 2023, Vol 140.
• “Learning and Information Transmission within Multinational Corporations,” with Cheng Chen and Hongyong Zhang, European Economic Review, 2022, 143, 104016.
• "Multinational Production with Non-neutral Technologies", Journal of International Economics, 2020, 123, 103294. 

Working Papers:

• "Counterfactual Retaliatory Tariffs and the 2020 United States Presidential Election", with Xiaohan Zhang, November 2023.
• "Production and Ownership Networks", with Cheng Chen and Hongyong Zhang, June 2023. 
• "Communication Costs, Direct Flights and International Trade", with Taiji Furusawa, Heiwai Tang and Jiaxu Zhang. Draft available upon request.
• "Information Acquisition and Price Setting under Uncertainty", with Cheng Chen, Tatsuro Senga and Hongyong Zhang. Draft available upon request.