| Date | Activity | Institution | |
| Aug-2002-now | Invstigatror (primary schools), Overall Study on ITEd project | The Hong Kong Polytechnic University | |
| May 2002-now | Programme Leader, Professional Development Programme for Teacher Leaders – Information Technology in Education | The Hong Kong Polytechnic University | |
| Oct-2001 | PhD thesis examiner, Faculty of Science, University of Sydney (Oct-2001) | University of Sydney | |
| May 2-4 2001 | Publication Chairman, Proceedings 2001 International Symposium on Intelligent Multimedia, Video and Speech Processing, , Hong Kong | I.E.E.E. | |
| 2001-now | Module A and Module D leader, Professional Development Programme for Teacher Leaders – Information Technology in Education | The Hong Kong Polytechnic University | |
| Feb-2001 | Course Coordinator, IT Course on System Development and Network Administrator for Executive Officers of HKSAR Government | The Hong Kong Polytechnic University | |
| 1998-2002 | Executive Member, Information Technology Division | Hong Kong Institution of Engineers | |
| 1999 | Secretary, Asia-Pacific Mobile Communication Symposium 1999 | Hong Kong Institution of Engineers | |
| 1998-now | Membership Interviewer (1998- now) | Institution of Electrical Engineers | |
| 1999-now | Committee member of the organizing committee of forum organized by Guangdong-Hong Kong Association for the Promotion of Technology Enterprise (HK) Ltd. | Guangdong-Hong Kong Association for the Promotion of Technology Enterprise (HK) Ltd. | |
| 1999-now | Member, School Management Committee (Tsuen Wan Government Secondary School) (1999-now) | Education Department, Hong Kong SAR Government. | |
| 1999 | Judge, Institution of Electrical Engineers Younger Member Chapter Paper Contest (1999) | Institution of Electrical Engineers | |
| January 13-15, 2000 | Paper Reviewer, 2000 International Workshop on Multimedia Data Storage, Retrieval, Integration and Applicaitons | ||
| 1999-now | Networking Academy Instructor | Cisco | |
| May, 2000 | Invited Panelist, Seminar on Internet Hacking and Security, 6 May 2000, City University of Hong Kong, Hong Kong. | Hon. Sin Chung-Kai's Office | |
| June 2000 | Organizer, Digital Signature Workshop, a workshop jointly organized by Center for Multimedia Signal Processing, Department of Electronic & Information Engineering, IT Division, The Hong Kong Institution of Engineers, and Hongkong Post. | The Hong Kong Institution of Engineers | |
| 2000 | Paper reviewer for Pattern Recognition Letters, Elsevier Science. | Pattern Recognition Letters | |
| June 2000 | Session chair, One-day Conference on Internet Security, The Institution of Electrical Engineers, Hong Kong | The Institution of Electrical Engineers |