[1]   2011.3 to  Now
Central South University, China  | Professor
[2]   2010.7  to  2011.3
University of Cincinnati, USA  | Senior visiting scholar
[3]   2005.9  to  2010.7
Central South University  | Professor
[4]   2003.4  to  2005.8
Hunan University  | Associate Professor
[5]   2001.12  to  2003.3
Ruhr University Bochum, Germany  | visiting scholar
[6]   2000.9  to  2001.12
Hunan University  | Associate Professor
[7]   1994.12  to  2000.8
Hunan University  | Lecturer