"Delta Synergy: How Shanghai's 1+6 Mega-Region Is Redefining Global Urban Clusters"

PART I: THE FLUID METROPOLIS1.1 The 45-Minute Constellation:- 18 cross-city industry chains- Shared R&D tax incentives- Unified digital governance platform1.2 Infrastructure Symbiosis:• Quantum-secured intercity data tunnels• Modular container