Core Viewpoint - The construction of the world's longest underwater shield tunnel, the Jiang Hai Tunnel, has entered a critical phase as the shield machine "Jiang Hai" successfully transitioned from land to the Yangtze River section, marking a significant milestone in the project [1] Group 1 - The "Jiang Hai" shield machine has achieved a tunneling distance of over 1500 meters, operating at a daily progress rate of 12 to 16 meters towards Suzhou Taicang [1] - The project team has conducted comprehensive inspections and evaluations of the shield equipment since August, focusing on key components such as the cutter head and tools to ensure optimal tunneling performance [1] - An expert group has been invited to assess the overall condition of the shield machine on-site, ensuring it meets the high standards required for underwater tunneling [1] Group 2 - To address challenges posed by long distances, high water pressure, and deep burial, the project team has significantly enhanced the reliability of the shield machine under high water pressure conditions [2] - The construction process utilizes a "Digital Shield" and "Smart Shield Control Center" system for real-time monitoring of critical parameters, ensuring safety and efficiency during tunneling [2] - An automatic early warning mechanism has been established to analyze vast amounts of data (603138) in real-time, aiding in precise adjustments of construction parameters [2]