Eighty-nine meters beneath the Yangtze River, the world’s largest-diameter tunnel boring machine—standing as tall as a five-story building—is carving a 14-kilometer passage. Over 500 sensors track every movement, feeding 80,000 data points per meter into AI for real-time control.
The project is driving industrial upgrades and, with over 500 billion yuan in investment, is expected to generate nearly 1-and-a-half trillion yuan in economic output.
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