On Nov. 4th, Prof. Song Shuyan from Changchun Institute of Applied Chemistry came to the PKU for academic report. Guided by Prof. Zhang, he toured the various instruments and display boards of our group. He is currently working at the State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, where he has long been engaged in developing new rare earth metal-based catalytic materials. Thank Prof. Song Shuyan for his visit!