Core Points - The project "Cangyuan" shield machine, constructed by China Communications Tunnel Bureau, has officially commenced its tunneling phase on August 11 [1] - The Hai-Tai Yangtze River Tunnel spans a total length of 39.07 kilometers, connecting Haimen District in Nantong, Jiangsu, to Taicang City in Suzhou, Jiangsu [1] - The "Cangyuan" shield machine is 176 meters long, weighs over 5,650 tons, and has a tunneling diameter of 16.66 meters, representing China's independent research and development in slurry balance shield machines [1] Technology and Innovation - The "Cangyuan" shield machine integrates three core technologies to address the challenges of ultra-long distance, large diameter, high water pressure, and deep burial [1] - It features a "digital brain" for intelligent control, "smart blade" technology to overcome efficient tunneling bottlenecks, and the world's first "smart heart" active protection system [1] - The collaborative application of diverse technologies provides dynamic safety assurance for complex working conditions characterized by "long, large, high, and deep" [1]