Hong Kong once possessed a prosperity stratum that was never formally named yet widely recognized. It emerged from a generation of cross-boundary industrialists whose factories operated in the Pearl River Delta while their families, wealth, and long-term strategies remained anchored in Hong Kong. They were not simply residents; they were economic actors navigating two institutional systems. Their activities generated density — in consumption, investment, education, and social life — forming the backbone of Hong Kong’s middle-class vitality. When this stratum faded, Hong Kong lost not only its manufacturing base but an entire socioeconomic formation that had given the city depth and resilience.
Today, the Hong Kong Special Administrative Region is advancing the Northern Metropolis development, the most ambitious spatial project in its history. The question is not whether the city can build another new town, but whether it can recreate the prosperity stratum that once sustained its dynamism. The answer lies less in land or infrastructure than in whether the city can rebuild an institutional ecosystem capable of supporting cross-boundary economic actors once again.
Bordering Shenzhen and encompassing wetlands, river systems, and more than 230 indigenous villages, the Northern Metropolis is not a conventional new town. It represents an institutional frontier. Hong Kong’s spatial development has long been shaped by engineering logic and a scarcity mindset. The SLIDE framework — Symbiotic Land for Innovation, Development and Ecology — seeks to shift this paradigm by treating land as a living substrate capable of supporting innovation, development, and ecological integrity simultaneously.
Yet SLIDE is only a grammar. A prosperity stratum requires an institutional container. The Northern Metropolis will succeed only if Hong Kong can create a platform that enables cross-boundary industrialists to redeploy the strategic intelligence that once made them central to the city’s prosperity.
The Shenzhen River is an administrative boundary, not a national border. Coordination between Hong Kong and Shenzhen is an internal institutional arrangement within one country. The Northern Metropolis is therefore not a cross-border experiment but an institutional innovation zone within China. To succeed, Hong Kong must abandon border-thinking and adopt a twin-city mindset — the logic behind the proposed Hong Kong-Shenzhen twin city special zone. Its purpose is to establish predictable mechanisms for the flow of talent, research, data, capital, biological specimens and governance. If the Northern Metropolis becomes this interface, it can recreate the operating space that once empowered Hong Kong’s cross-boundary industrialists.
The industrialists of the 1990s thrived not because land was cheap or labor abundant, but because they operated at a unique institutional moment. Hong Kong provided a common law environment, international finance, global logistics, and high-quality education; the Chinese mainland offered low production costs and a regulatory system that was still taking shape. They arbitraged institutions, not wages. Their dual positioning created a prosperity stratum that anchored Hong Kong’s middle-class vitality for decades.
That window has closed. The mainland’s institutional infrastructure has matured: Shenzhen now possesses its own universities, medical systems, financial infrastructure, and a world-class innovation ecosystem. The institutional asymmetry that once empowered Hong Kong’s industrialists has disappeared. The prosperity stratum did not vanish because factories moved; it vanished because the institutional gap that sustained it narrowed.
Understanding why cross-boundary industrialists retreated requires acknowledging the scale of institutional progress in the mainland. For example, Shenzhen’s innovation ecosystem — spanning research, manufacturing, supply-chain integration, and global deployment — is now among the most complete in the world. Mainland digital governance has surpassed Hong Kong in efficiency, with electronic administration, digital taxation, cross-province services, and widespread fintech adoption.
Living standards in mainland cities have risen dramatically. Education, healthcare, transport, and community infrastructure now meet — and often exceed — middle-class expectations. The Pearl River Delta’s industrial chain has evolved into a comprehensive manufacturing ecosystem integrating materials, components, tooling, research and development, testing, and logistics. In this context, it is unsurprising that the industrialists who once anchored Hong Kong’s prosperity now choose to live, invest, and consume in the mainland. What Hong Kong lost was not manufacturing, but an entire cross-boundary middle-class stratum.
The Northern Metropolis is not merely a new town. It is a new institutional proposition. Hong Kong’s future prosperity may depend on whether it can become the institutional engine of a Hong Kong-Shenzhen twin city special zone
Recreating a prosperity stratum in the Northern Metropolis does not require industrialists to change their mindset. It requires Hong Kong to provide a new institutional ecosystem that enables them to redeploy their cross-boundary strategic intelligence. Their past success rested on institutional advantage, not cost advantage. Today, if the industrialists are to become a source of prosperity again, the Northern Metropolis must offer a platform where they can recombine research, data, finance, education, and environmental assets across a twin-city system.
Their commercial wisdom has not expired. But it needs a new institutional container. Whether Hong Kong can transform their longstanding strengths — judgement, risk management, resource integration, and long-term planning — into new forms of institutional innovation will determine whether the industrialists can become active economic actors again. The Northern Metropolis’ real task is not to change the industrialists, but to rebuild the institutional space in which they can operate.
China is opening a new institutional door — and the Northern Metropolis stands at its threshold. The Guangdong-Hong Kong-Macao Greater Bay Area’s infrastructural interconnectivity, Shenzhen’s rise as a global innovation hub and the central government’s emphasis on internal circulation all point toward a national logic that favors cities functioning as institutional interfaces rather than isolated jurisdictions.
Hong Kong, for the first time in decades, is positioned not as nation’s external gateway but as a potential internal institutional engine. The Northern Metropolis sits precisely at this threshold. Its proximity to Shenzhen, its ecological and spatial complexity and its potential role in data governance, research collaboration, and cross-boundary public services place it at the entrance of the nation’s next institutional chapter. Whether Hong Kong recognizes this door — and steps through it — will determine the city’s future relevance.
The core question is simple: Can the Northern Metropolis make cross-boundary economic actors active again? Prosperity comes from institutional design, not mere infrastructure; from cross-boundary life, not mere administrative maps. Hong Kong lost its industrialist stratum because it lost the institutional conditions that sustained it. The Northern Metropolis will succeed only if the city confronts this reality and builds a new institutional ecosystem that allows cross-boundary industrialists to become a source of prosperity once more. The Northern Metropolis is not merely a new town. It is a new institutional proposition. Hong Kong’s future prosperity may depend on whether it can become the institutional engine of a Hong Kong-Shenzhen twin city special zone.
The author is chairman of Doctoral Exchange, a Hong Kong-based think tank.
The views do not necessarily reflect those of China Daily.
