Professor Ronghua Pan's paper (joint with Feimin Huang and Huimin Yu), "Large time behavior of Euler-Poisson system for semiconductor," Science China, Mathematics, Vol. 51, No. 5 (2008), pages 965-972, has been selected as the excellent article of Science China, Mathematics. The journal selected eight outstanding papers from more than 1,000 articles published in the journal between January 2007 and December 2011. Professor Pan's paper was ranked number seven. The top three papers will receive the award of Excellent Article, and the other five will receive the award of Excellent Article, Honorable Mention.