On 26-27th of April, Prof. Gan and Shizhen attended the 5th National Symposium on Ecotoxicology (第五届生态毒理学研讨会）hold in Dalian.  It’s always a great pleasure to meet old friends. 

From left to right: Shizhen Zhao, Chang’er Chen, Gan Zhang, Jianhui Tang and Yan Wang.