Diana has served in special and academic libraries in US and Canada before returning to Hong Kong. Currently she is the Director of Library Services in The Hong Kong University of Science and Technology since 2012.
She is active in professional development. Having published over 20 journal papers and book chapters and a book, she has also presented about 60 conference papers on various library topics. Her research areas cover strategic management, staff development, space development, Learning Commons, institutional repository, consortia collection development, research support services, open access, etc.
In Hong Kong, the library consortium of eight government-funded academic libraries is JULAC. She has served as the Chair of JULAC in 2015/16, JULAC Access Services Committee in 2012-15, JULAC Consortiall Committee 2016-21, and Hong Kong Monographic Acquisitions Committee 2016-21. She was the President of Hong Kong Library Association 2019. She has been serving the Hong Kong Public Libraries Advisory Committee since 2015 and Guangdong Higher Education Library Committee since 2019. She has also served in Wiley Library Advisory Board.