Drs. Namhoon Kwon and Jiwon Kong from School of Pharmacy, Seoul National University, Korea, conducted collaborative research at Professor Sunghoon Kim’s laboratory located in the Chinese National Compound Library (CNCL). They were warmly greeted by Drs. Ming-Wei Wang (Director of CNCL), Dehua Yang (Associate Professor) and Jiejie Deng (Assistant Professor). Dr.  Namhoon Kwon gave a seminar entitled “Methionyl-tRNA synthetase controls CDK4 stability in p16INK4a-negative cancer”, and made scientific exchanges with two young physicians, Drs. Jinfeng Xiang and Zihao Bian from Cancer Hospital affiliated to Fudan University.