Diana Dai has worked as a documentary film-maker; a TV host/producer; a PR consultant; a print journalist; and an University teacher in Canada, UK, and China; interviewed many important politicians, successful businesspersons, artists and sports stars; produced good quality shows, written many articles, and completed editorial work for academic books.

Between 2007 and 2009, Diana has produced the following documentaries:

"China's Earthquake: The People in the Pictures";  producer for CBC, won the 2009 Gemini award and the 2010 Golden Sheaf award for the best history documentary.

http://www.youtube.com/watch?v=hbs6FvAtB8o

"China's Leap of Faith"; a two-part documentary series between 2007 to 2008, co-directer for Cogent/Banger Productions Inc. Vision TV.

http://exposureroom.com/members/prospecttv/854340435e464c3d970ab5b10dbb9924/

She also worked as a researcher, a consultant for two CBC documentary series "Love, hate and propaganda" and "500 days"，Consultant for “China’s Changing Relationship to Nature” for CBC .

Between 1996 to 2007, Diana produced, directed and hosted many special shows at OMNI TV; this included the following outstanding special programs: 

Hosted the three hours live trilingual coverage “Hong Kong’s return to Chinese sovereignty in 1997”,
Hosted and produced “federal and provincial election programming”,
Hosted and produced “Head tax apology”,
Hosted and produced “Chinese President Hu Jintao visit to Canada”,
Hosted and produced “Taiwan election”,
Hosted “Yip’s choir in China”

She was on the editorial board for the "Journal of Macro Linguistics" when she taught Chinese at the University of Leeds in the UK from 1992 to 1994. She was one of the editors and writers for the textbook "Television in its social context" for the University of Ontario Institute Technology in 2011.