2020/05-present, Deputy Dean, Institute of Environment and Ecology, Tsinghua Shenzhen

International Graduate School, Tsinghua University

2019/11-present, Associate Dean, Tsinghua Shenzhen International Graduate School, Tsinghua

University

2004-present,  Professor, Department of Environmental Science and Engineering, Tsinghua

University

2010/07-2016/07, Professor, Vice Dean , School of Environment, Tsinghua University

1997/09-2004/12, Associate Professor, Department of Environmental Science and Engineering,

Tsinghua University

1998/01-1999/01, Visiting Scholar, Department of Civil Engineering, Newcastle University, UK

1995/08-1997/09,  Assistant Professor, Department of Environmental Science and Engineering,

Tsinghua University