Prof. Dr. Hongjie Wang serves as the Dean of the School of Eco-Environment, Hebei University, and the Dean of Xiongan Ecological Environment Research, Hebei University. He obtained a Bachelor's Degree in Chemical Engineering at Hebei University of Technology, a Master's Degree in Applied Chemistry at the China Academy of Petroleum and Chemical Industry, and a Ph.D. Environmental Engineering at the Research Center for Ecology and Environment, Chinese Academy of Sciences. His main research directions are water purification principles and technologies, principles and applications of ecological restoration technology, principles and applications of environmental material preparation technology, and complex pollution mechanism and remediation technology of heavy metals and organic matter.