Serviced Office at Millennium City 5 (APM). The Millennium City Series of Grade A commercial buildings is developed by Sun Hung Kai, who also developed Hong Kong’s iconic IFC and ICC buildings. The series now consists of Millennium City 1, 2, 3, 5 and 6. Millennium City 5, where we are located, is the focus of the development. It is connected directly to the MTR and has a huge shopping mall called APM that occupies the bottom thirteen floors.