Empowering Resilient City Systems Through the Digital Economy: A Public Policy Perspective The Case of Beijing

Against the background of escalating global climate crises and urban disaster risks, traditional urban governance models urgently require transformation. This essay adopts a public policy perspective, taking Beijing as its case study. Through literature review and case analysis, it systematically explores how the digital economy empowers Resilient City Systems. Findings reveal that digital technologies, through means such as digital twin systems and emergency response systems, are deeply embedded within four urban subsystemsearly warning, emergency response, recovery, and learningsignificantly enhancing risk response capabilities. A bidirectional relationship emerges between digital technologies and public policy: policy provides strategic direction and institutional safeguards for technological application, while technology drives iterative optimisation of policy instruments through data feedback. The study's findings offer theoretical reference and practical paradigms for resilience-building in megacities.