On June 6th to 7th, the CHINED-4D Environment Seminar (Environmental Solutions Symposium) was successfully held in the Research Center for Eco-Environmental Sciences, CAS. This symposium was co-organized by the Key Lab of Environmental Biotechnology and the Wageningen University in the Netherlands. The chairs were Prof. Wang Aijie of RCEES, Profs. Huub H. M. Rijnaart and Carolien Kroeze of Wageningen University. The deputy director of the RCEES, Prof. Yang Min attended the opening ceremony and delivered a speech. Researchers from Wageningen University, University of Twente and Chinese institutions attended the forum.