| When | Where | Address |
|---|---|---|
| Jan. 2004 - now | MIT ITS Lab | 77 Massachusetts Avenue, 1-249 (prior to Mar 2005 it was at NE20-208),
Cambridge, MA 02139, USA |
| Sep. 1996 - Jul. 2003 | Tsinghua University | Beijing 100084, P. R. China |
| Prior to Sep. 1996 | City of Guangzhou | Guangzhou, Guangdong Province, P. R. China |