Video
PAIR Seminar : What Does Improving Longevity Mean for the Future of Our Cities
On 14 April 2026, Prof. JIN Ying, Professor of Architecture and Urbanism and Director of Studies for Robinson College of the University of Cambridge, delivered a PAIR Seminar titled “What does improving longevity mean for the future of our cities?” at the PolyU campus. The seminar attracted nearly 100 entrepreneurs, scholars, researchers and students joining onsite, and over 16,400 online viewers across various social media platforms to explore how the global “longevity revolution” is reshaping urban space, cultural activities, and socio-economic development.
Prof. Jin opened the seminar by highlighting that 2026 marks an important tipping point in the global demographic landscape, as the global median age reaches 31.1 years. He noted that while ageing is a global trend, East Asian countries are experiencing a markedly faster pace of population ageing than Western nations. Prof. Jin further emphasised that although increased life expectancy is often regarded as a healthcare or public health issue, in reality, it is closely intertwined with city planning and urban design. He highlighted that macro-economists often describe population ageing as a “Grey Rhino”, implying that it is a highly probable yet long-ignored threat associated with a series of consequences, including rising dependency ratios, shrinking workforces, and escalating healthcare expenditures.
One of the core themes of the presentation was the need for society to undergo a fundamental shift from “caregiving” to “inclusion”. Prof. Jin argued that society must move beyond the entrenched mindset of older adults as “care recipients” or “social burdens”. Drawing on the philosophical perspectives of Confucius’ concept of filial piety and Zhuangzi’s notion of aligning with nature, he emphasised that how a society treats its older population fundamentally reflects its core societal values. As such, city transformation goes beyond improvements in urban infrastructure and represents a shift in values. To truly improve “health expectancy”, Prof. Jin emphasised that reshaping urban design is critical, not only to foster greater independence across generations but also to strengthen intergenerational relationships, ensuring that both urban environments and humanistic values evolve in tandem with demographic changes.
Prof. Jin also discussed the importance of “spatial balance” in urban planning. Using the United Kingdom as a case study, he demonstrated how the excessive concentration of jobs and wealth in a small number of urban hubs exacerbates regional inequality. He argued that longevity should not be understood solely as the extension of life span, but also as a process in which people of all generations can equitably enjoy quality of life and development opportunities. He advocated for fostering inclusive and equitable business and employment environments to ensure that cities remain vibrant and resilient, even as populations continue to age.
In his concluding remarks, Prof. Jin summarised that while population ageing is often perceived as a pressing problem, it is also an opportunity that should be embraced. He warned that because of persistently declining birth rates, particularly in East Asia, this “urban revolution” must take place before today’s younger generations enter old age. He cautioned that forward-looking planning, individual responsibility and government-community collaboration are essential; without them, demographic imbalance will become an irreversible crisis.
Event date: 14/4/2026
Speaker: Prof. JIN Ying
Hosted by: PolyU Academy for Interdisciplinary Research
Prof. Jin opened the seminar by highlighting that 2026 marks an important tipping point in the global demographic landscape, as the global median age reaches 31.1 years. He noted that while ageing is a global trend, East Asian countries are experiencing a markedly faster pace of population ageing than Western nations. Prof. Jin further emphasised that although increased life expectancy is often regarded as a healthcare or public health issue, in reality, it is closely intertwined with city planning and urban design. He highlighted that macro-economists often describe population ageing as a “Grey Rhino”, implying that it is a highly probable yet long-ignored threat associated with a series of consequences, including rising dependency ratios, shrinking workforces, and escalating healthcare expenditures.
One of the core themes of the presentation was the need for society to undergo a fundamental shift from “caregiving” to “inclusion”. Prof. Jin argued that society must move beyond the entrenched mindset of older adults as “care recipients” or “social burdens”. Drawing on the philosophical perspectives of Confucius’ concept of filial piety and Zhuangzi’s notion of aligning with nature, he emphasised that how a society treats its older population fundamentally reflects its core societal values. As such, city transformation goes beyond improvements in urban infrastructure and represents a shift in values. To truly improve “health expectancy”, Prof. Jin emphasised that reshaping urban design is critical, not only to foster greater independence across generations but also to strengthen intergenerational relationships, ensuring that both urban environments and humanistic values evolve in tandem with demographic changes.
Prof. Jin also discussed the importance of “spatial balance” in urban planning. Using the United Kingdom as a case study, he demonstrated how the excessive concentration of jobs and wealth in a small number of urban hubs exacerbates regional inequality. He argued that longevity should not be understood solely as the extension of life span, but also as a process in which people of all generations can equitably enjoy quality of life and development opportunities. He advocated for fostering inclusive and equitable business and employment environments to ensure that cities remain vibrant and resilient, even as populations continue to age.
In his concluding remarks, Prof. Jin summarised that while population ageing is often perceived as a pressing problem, it is also an opportunity that should be embraced. He warned that because of persistently declining birth rates, particularly in East Asia, this “urban revolution” must take place before today’s younger generations enter old age. He cautioned that forward-looking planning, individual responsibility and government-community collaboration are essential; without them, demographic imbalance will become an irreversible crisis.
Event date: 14/4/2026
Speaker: Prof. JIN Ying
Hosted by: PolyU Academy for Interdisciplinary Research
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