Professor John R. Yates of the Scripps Research Institute (TSRI, La Jolla, California, USA) visited the Chinese National Compound Library (CNCL) in the afternoon of August 5, 2013. He was warmly received by Professor Ming-Wei Wang. Maureen A. Duffy (Vice President), Tasha Agreste (Proteomics Product Manager) and Dr. Kevin K. Millis from Cambridge Isotope Laboratories, Inc. (USA) participated in the visit.