The Yangtze (Chang Jiang), Asia's longest river at 6,300 km, is China's lifeline:
Navigable for 2,800+ km; moves billions of tons of cargo yearly; links interior to Shanghai and the sea.
Serves 400+ million people; irrigates 100+ million hectares of farmland.
Three Gorges Dam (world's largest) generates 100+ TWh/year; multiple dams provide ~20% of China's electricity.
Historically devastating floods; dams and levees now regulate flow, though challenges remain.
Yangtze Basin = 40% of China's GDP, 35% of population; industrial corridors (Chongqing, Wuhan, Nanjing, Shanghai).
Inspires poetry, art, legend; Three Gorges are a top tourist destination.
No other river so comprehensively sustains a nation's economy, ecology, and identity.