On Oct. 21st, Prof. Li Xiaonian from Zhejiang University of Technology visited Peking University for an academic report at the invitation of Prof. Zhang. He toured our lab and exhibition boards under Prof. Zhang's guidance and took a group photo with us. At afternoon, he delivered a special lecture on the manufacturing and industrial applications of metal catalysts in CB101, where he discussed the application of metal catalysts from an industrial perspective. We would like to thank Prof. Li Xiaonian for his visit!