As Hong Kong’s Northern Metropolis undergoes massive planning to establish a new central business district, rapid urbanisation threatens vital agricultural lands in San Tin and Kwu Tung. "Cultivating Rhythms" confronts this challenge by envisioning a symbiotic future where agricultural heritage and urban density harmoniously coexist. Sited at Fan Leng Lau Village, this pilot project reimagines architecture as a dynamic metabolic system. By transforming public spaces into a "living machine," the built environment transitions from a consumer of resources into an active, generative infrastructure. The architecture utilizes a modular plug-in system to ensure adaptive resilience, allowing agricultural and social spaces to flexibly evolve alongside shifting community needs. This framework is driven by a closed-loop metabolism that fosters a localized circular economy by systematically repurposing waste into nutrient inputs. Within a co-living framework, shared landscapes act as a social catalyst, empowering residents to graduate from passive observers to active stewards of the land. The project links rural traditions with urban regeneration through scalable programming. From eco-educational tourism to a community factory, it secures long-term economic and social viability. Ultimately, "Cultivating Rhythms" redefines the urban village—not as an outdated relic, but as a vibrant, productive "green lung" essential for Hong Kong’s future urban resilience.