1996 - my office	1997 - Christmas party at home	1997 - end of research chair (01)	1997 - end of research chair (02)	1997 - end of research chair (03)	1997 - end of research chair (04)
1997 - end of research chair (05)	1997 - end of research chair (06)	1997 - end of research chair (07)	1997 - end of research chair (08)	1997 - end of research chair (09)	1997 - end of research chair (10)
1997 - end of research chair (11)	1997 - end of research chair (12)	1997 - end of research chair (13)	1997 - end of research chair (14) - I become emeritus professor	1997 - end of research chair (15) - graduation of Tan