City University of Hong Kong (Abbreviation: CityU; Chinese: 香港城市大學) is a public research university located in Tat Chee Avenue, Kowloon Tong, which was originally founded in 1984 as City Polytechnic of Hong Kong and became a fully accredited university later in 1994.
Adjacent to Festival Walk, CityU is always regarded as a "shopping mall". CityU students, however, would regard Festival Walk as their "White Zone", as there are 4 zones with different colors in the main academic building. It is the most convenient campus among HK students, so you are able to see students from different universities, as well as secondary schools, meeting here.
GZ is located on 5/F of the Green zone area. The opening hour is 07:00-23:00. Students called here "Skygarden (空中花園)". In order to avoid muggles, it is suggested to come here in the early morning, late night, weekends or long school holidays such as summer, sem break, Christmas, New Year, Easter, etc. No smoking please!