2025-05-29 00:48 | 0 阅读 The Delta Effect: How Shanghai's Economic Gravity Reshapes Surrounding Cities The Shanghai Megaregion: By the NumbersCovering 35,800 square kilometers across four provinces, the Shanghai-centered Yangtze River Delta megaregion now accounts for:• 24% of China's GDP ($4.3 trillion)• 37% of total foreign trade• 45% of con