On May 21^th , Prof. Li Chao-Jun ,from McGill University of  Canada and Prof. Li Yan from Peking University, visted our school and brought us excellent reports in room E-104. Prof. Li Chao-Jun mainly talked about the exploration of new reactivities for a sustainable Future. His research group have done a lot of work in this chemistry. Prof. Li Yan has made a big progress in the controlled chiral growth of the single-walled carbon nanotubes.  All of us learned a lot from these two excellent reports.