“…In this HK-PRD case where the agglomerative implications of a mega-city economy or core (Hong Kong)-periphery (PRD) system were elaborated and discussed, economic efficiency and growth can be achieved through the enlargement of production scale at both the micro (firm) and macro (economy) levels (Tuan and Ng, 1995a;andNg andTuan, 1997 and2000). The formation of such a mega-city economy, that is, Greater-PRD together with Hong Kong as its core, was materialised via regional economic integration and development by exploiting the comparative advantages of the HK-PRD metropolitan region (Tuan, Ng and Wong, 1998;and Tuan and Ng, 2001b) and the sharing of the agglomeration economies in both production and consumption within the HK-PRD economicintegrated entity (Tuan and Ng, 2001a).…”