1995 - 1997: Postdoc and Assistant Researcher, Research Institute of Fluid Machinery, Tsinghua University
1997 - 1999: Associate Professor, Research Institute of Fluid Machinery, Tsinghua University
(1997 - 1998: Visiting Scholar, Department of Mechanical Engineering, Seoul National University, Korea)
1999 - 2003: Associate Professor, School of Vehicle and Mobility (former Department of Automotive Engineering), Tsinghua University
2003 - present: Professor, School of Vehicle and Mobility, Tsinghua University