2025-06-02 00:11 | 0 阅读 The Shanghai Megacity Cluster: Blueprint for 21st Century Urbanization Shanghai and the Yangtze River Delta: Redefining Urban ChinaSection 1: The Economic Powerhouse• Combined GDP of $4.2 trillion (2025 estimate)• 45% of China's total import/export volume• Specialized industrial distribution: - Shanghai: Global