On December 26, 2023, Dr. Tang Bohan from the Department of Chemistry at the University of Hong Kong visited Peking University for an exchange visit with the Huang Zehuan research group and our group, and gave a presentation titled “Click on Light: Photoswitchable Hydrogen-Bonding Motif and RAFT Agent.” In his presentation, he shared with us his latest research progress during his postdoctoral studies in Germany.