On May 21, at the Third International Symposium on Organic Synthesis and Drug Development, 4 Nobel Prize winners Aaron Ciechanover, Robert Huber, Walter Kohn, Dan Shechtman, as well as Zhou Qilin, academician of Chinese Academy of Sciences and professor of Nankai University were present. Besides, city leaders Yan Li, Cai Jun and Wang Chengbin attended the opening ceremony. During the activity, 4 Nobel Prize Winners will give the theme lectures respectively.