Professor Nan Shen (Director of Shanghai Institute of Rheumatology, Renji Hospital) and Dr. Yuanjia Tang visited the Chinese National Compound Library (CNCL) in the morning of December 12, 2014. They were warmly greeted by Drs. Ming-Wei Wang (Director CNCL) and Dehua Yang, with whom potential collaboration in the area of immunology was enthusiastically discussed.