On December 9, 2021, organized by Chern Institute of Mathematics (CIM), teachers and students watched the live webcast of the colloquium lecture on "What makes a good mathematical question?" delivered by Professor Don Zagier from Max Planck Institute for Mathematics (MPIM), Germany and International Centre for Theoretical Physics (ICTP), Italy.

The joint colloquium is organized by Shenzhen International Center for Mathematics (SICM) and the Department of Mathematics at Southern University of Science and Technology, cohosted by Sino-Russian Center for Mathematics and Chern Institute of Mathematics, etc. The lecture set its main venue at Southern University of Science and Technology and branch venue at Chern Institute of Mathematics.