Nov. 22nd to 26th, 2025, Prof. Xi Zhang and Assoc. Prof. Jiang-Fei Xu, together with a postdoctoral fellow and many PhD students, attended the 2025 Polymer Division (CCS) Congress held in Guangzhou, China. Prof. Xi Zhang served as the president of the conference and delivered speeches at the opening ceremony. He also gave an invited lecture titled "The serendipity and inevitability in scientific discovery" at the Polymer Education Chapter. Assoc. Prof. Jiang-Fei Xu gave an invited lecture titled "Radical-mediated click-clip reactions" in Polymer Chemistry Chapter. The postdoctoral fellow and PhD students demonstrated their works through oral presentation and flash talks.