| 7th Congress of Chinese Society for Neuroscience | 10/2007 | Program Committee Member | | |
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| 7th IBRO World Congress of Neuroscience | 07/2007 | International Program Committee Member | | |
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| 7th International Conference on Tall Buildings, Sustainable Tall Buildings, 29-30 October 2009, Hong Kong | 2007 - 09 | Member of Organizing Committee, Chairman of Technical Committee and Member of Fund Raising Committee | | |
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| 7th International Huaxia Congress of Endocrinology | 12/2011-12/2012 | Co-Chairman, Scientific Committee | | |
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| 7th Joint ISICR/ICS Conference, Montreal, Canada, Oct 12-16, 2008 | 2007-2008 | International Scientific Committee Member | | |
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| 80th ASIS&T Annual Meeting | |
| 83rd FDI Annual World Dental Congress, Hong Kong | |
| 8th Asian-Oceanian Symposium on Plant Lipids, Canberra | 12/2017-11/2019 | Board Member | | |
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| 8th Biennial Congress of Chinese Society for Neuroscience | 11/2009 | Program Committee Member | | |
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| 8th International Conference on Steel and Aluminium Structures | 01/2016-12/2016 | Member of Local Organizing Committee | | Dr Cai Cai Yancheng |
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| 8th International Huaxia Congress of Endocrinology | 12/2012-8/2013 | Organizing Committee | | |
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| 8th International Symposium on Microchemistry and Microsystems (ISMM-2016) | 04/2016 - 09/2016 | Executive Conference Seceretariat | | |
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| 8th Joint Annual Scientific Meeting of The Hong Kong Society of Gastroenterology, Hong Kong Society of Digestive Endoscopy, Hong Kong Society for Coloproctology, The Hong Kong Association for the Study of Liver Diseases, and The Hong Kong Society of Gastrointestinal Motility | 2006 | Chairman of organizing committee | | |
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| 8th World Congress on Sleep Apnea | 2006 | Member, International Scientific Committee | | |
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| 9th Asian-Oceanian Symposium on Plant Lipids | 2/2021-10/2023 | Board Member | | |
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| 9th Congress of Asian Pacific Society of Respirology | 2004 | Chairman, Organizing Committee | | |
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| 9th Global Diabetologists Annual Meeting (June 6-8, 2016, Dallas, USA) | 08/2015-06/2016 | Oranising Committee Member(http://annualmeeting.conferenceseries.com/diabetologists/organizing-committee.php) | | |
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| 9th International Conference on Computer Supported Collaborative Learning | 2009-2011 | Conference Chair | | |
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| 9th International Conference on Early Psychosis 2014 Abstract Review Committee | 1/2014 till 10/2014 | Committee member | | |
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| 9th Joint Annual Scientific Meeting, jointly organized by The Hong Kong Society of Gastroenterology, Hong Kong Society of Digestive Endoscopy, Hong Kong Society for Coloproctology, The Hong Kong Association for the Study of Liver Diseases, and The HK Society of Gastrointestinal Motility | 2007 | Chairman of organizing committee | | |
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