Professor leyong Wang and laboratory Secretary Ailing Tang went to Hulunbuir, Inner Mongolia to participate in the 19th national symposium on macrocyclic chemistry and the 11th Symposium on supramolecular chemistry. Professor Wang leyong is a member of the academic committee of the conference and makes an invitation report to the conference. Hulunbuir conference is not only an academic event, but also Hulunbuir grassland, one of the four grasslands in the world. Thank the teachers and students of Chemistry Department of Inner Mongolia University and Hulunbuir University for their effective organization, especially Professor Su Haiquan, President of Chemistry Society of Inner Mongolia University, Professor Bai Xiaoyan and his colleagues of Hulunbuir University.