On November 21,Markku Tapio Kulmala, Director of the Institute for Atmospheric and Earth System Research (INAR), Academician of the Academy of Finland, and Foreign Academician of Chinese Academy of Sciences, led adelegation of University of Helsinki to Nanjing University.Tan Zhemin, President of NJU and Academician of Chinese Academy of Sciences (CAS) met with the delegation.Fu Congbin, Academician of CAS and Foreign Academician of Finnish Academy of Science and Letters, andDing Aijun,Assistant