| 11-13 Nov., 2014 | Conference Co-Chair of ACM Symposium on Virtual Reality Software and Technology (VRST) 2014, Edinburgh - U.K. |
| 14-17 Aug., 2014 | Program Co-Chair of International Conference on Web-based Learning (ICWL) 2014, Tallinn - Estonia. |
| 6-9 Oct., 2013 | Conference Co-Chair of International Conference on Web-based Learning (ICWL) 2013, Kenting - Taiwan. |
| 1 Dec., 2011 | Workshop Co-Chair of ACM SIGMM Workshop on Multimedia Technologies for Distance Learning (MTDL) 2011, Scottsdale - Arizona. |
| 6-8 Dec., 2010 | Conference Co-Chair of ACM Symposium on Virtual Reality Software and Technology (VRST) 2010, Hong Kong. |
| 29 Oct., 2010 | Workshop Co-Chair of ACM SIGMM Workshop on Multimedia Technologies for Distance Learning (MTDL) 2010, Firenze - Italy. |
| 5-6 July, 2010 | Program Co-Chair of IEEE International Conference on Ubi-media Computing (U-Media) 2010, Jinhua - China. |
| 3-5 Dec., 2009 | Program Co-Chair of International Conference on Ubi-media Computing (U-Media) 2009, Tamkang University - Taiwan. |
| 28-30 Sept., 2009 | Workshop Co-Chair of International Workshop on Interactive Digital Entertainment Technologies (IDET) 2009, Tamkang University - Taiwan. |
| 23 Oct., 2009 | Workshop Co-Chair of ACM SIGMM Workshop on Ambient Media Computing: Media Data Integration (MDI) 2009, Beijing - China. |
| 23 Oct., 2009 | Program Co-Chair of ACM SIGMM Workshop on Multimedia Technologies for Distance Learning (MTDL) 2009, Beijing - China. |
| 19-21 Aug., 2009 | General Co-Chair of International Conference on Web-based Learning (ICWL) 2009, Aachen - Germany. |
| 20-22 Aug., 2008 | General Co-Chair of International Conference on Web-based Learning (ICWL) 2008, Jinhua - China. |
| 15-16 July, 2008 | Workshop Co-Chair of International Workshop on Interactive Digital Entertainment Technologies (IDET) 2008, Lanzhou - China. | 14-16 Sept., 2007 | Program Co-Chair of International Conference on Entertainment Computing (ICEC) 2007, Shanghai - China. |
| 15-17 Aug., 2007 | Conference Co-Chair of International Conference on Web-based Learning (ICWL) 2007, Edinburgh - United Kingdom. |
| 29 Nov. - 1 Dec., 2006 | Program Co-Chair of The 16th International Conference on Artificial Reality and Telexistence (ICAT) 2006, Hangzhou - China. |
| 19-21 July, 2006 | Program Area Co-Chair of International Conference on Web-based Learning (ICWL) 2006, Penang - Malaysia. |
| 7-9 Nov., 2005 | Conference Co-Chair of ACM Symposium on Virtual Reality Software and Technology (VRST) 2005, Monterey - California. |
| 17-19 October, 2005 | Conference Co-Chair of Computer Animation and Social Agents 2005 Conference, Hong Kong. |
| 31 July - 4 Aug., 2005 | Technical Track Subcommittee of ACM SIGGRAPH 2005 Web Program, Los Angeles. |
| 31 July - 3 Aug., 2005 | Program Co-Chair of International Conference on Web-based Learning (ICWL) 2005, Hong Kong. |
| 10-12 Nov., 2004 | Program Co-chair of ACM Symposium on Virtual Reality Software and Technology (VRST) 2004, Hong Kong. |
| 8-11 Aug., 2004 | Program Co-chair of International Conference on Web-based Learning (ICWL) 2004, Beijing - China. |
| 15-18 Dec., 2003 | Session Co-Chair of IEEE Pacific-Rim Conference on Multimedia 2003, Singapore. |
| 11-13 Nov., 2002 | Organization Co-Chair of ACM Symposium on Virtual Reality Software and Technology (VRST) 2002, Hong Kong. |
| 3-6 July, 2001 | Publication Chair of Computer Graphics International (CGI) 2001, Hong Kong. |
| 11-13 Dec., 2000 | Local Arrangements Co-chair of International Conference on Algorithms and Architecture for Parallel Processing 2000, Hong Kong. |