On December 26, 2023, Dr. Bohan Tang from the Chemistry Department at the University of Hong Kong graced Peking University with his presence for a collaborative exchange visit. He engaged in fruitful discussions with both the Zehuan Huang research group and our own team, delivering an illuminating presentation entitled “Click on Light: Photoswitchable Hydrogen-Bonding Motif and RAFT Agent.” During his talk, Dr. Tang generously shared the cutting-edge findings from his postdoctoral research conducted in Germany, enriching our understanding of the field.