Professor Jin-Ming Yang, Department of Pharmacology, College of Medicine, Penn State University (USA) and Professor Fang Guo, Director of Center for Nanomedicine and Translational Medicine, Shanghai Advanced Research Institute, Chinese Academy of Sciences, visited the Chinese National Compound Library (CNCL) in the afternoon of June 4, 2012. Professor Ming-Wei Wang briefly introduced the development, culture and prospect of the library. The guests were very impressed with the scale and infrastructure of this state-of-the-art research facility, and expressed that they would follow-up the development of CNCL and promote future scientific collaborations and exchanges.