On May 20, 2021, the Institute of World Economics and Politics (IWEP), the National Institute for Global Strategy (NIGS) and the Bureau of International Cooperation of the Chinese Academy of Social Sciences (CASS) co-hosted the "Qian Junrui-Pushan Lecture," inviting Joseph Stiglitz, professor at Columbia University and Nobel laureate for economics, to make a speech on the topic of "Lessons from COVID-19" and have in-depth discussions and exchanges with experts and scholars from CASS.