Prof. HU Hongying is the Dean of Xiuzhong College and a distinguished Professor in the School of Environment, Tsinghua University. He is a leading expert in water environment governance and water reuse technologies, with a primary focus on the safety assessment and control of reclaimed water and regional water cycle utilization. Prof. HU demonstrates significant international leadership, having served as the inaugural Chairman of the ISO TC282 SC2 on Urban Water Reuse(2014.8-2022.12), Member of Management Committee of IWA Water Reuse Specialist Group(2008.9－),etc. His current role as Dean aligns his extensive research experience with the College's mission to cultivate interdisciplinary leaders committed to sustainable development.