Introduction to Plum Hall and Ceremony Hall: Plum Hall and Ceremony Hall were built in 1914. They are historical buildings in Hong Kong and belong to the Edwardian architectural style. It used to be a student dormitory in the early days of the school. Zhang Ailing lived here when she was studying at the University of Hong Kong. It is now used as the "Journalism and Media Research Center of the University of Hong Kong", general education and office buildings.