07/2022– present, Professor, School of Integrated Circuits, Peking University
11/2003 – 06/2022, Professor, School of EECS, Peking University
11/2002—10/2003, Visiting Professor, SNDL, National University of Singapore
09/2001 – 10/2002, Professor, IME, Peking University
12/1997 - 08/2001, Assoc. Professor, IME, Peking University
01/1996 -- 12/1997, Post-Doctor Fellow, IME, Peking University
09/1992 -- 12/1995, Research Assistant, Department of Computer Science and Technology, Peking University