Professor Mark Mercola of Sanford-Burnham Medical Research Institute (La Jolla, California, USA) and Professor Pilar Ruiz-Lozano of Stanford University (Palo Alto, California, USA) visited the Chinese National Compound Library (CNCL) in the afternoon of March 10, 2014. They were accompanied by Professor Qiang Zhao of Shanghai Institute of Materia Medica, Chinese Academy of Sciences. A warm reception was given by Professor Ming-Wei Wang, Director of CNCL.