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E-mail Xinhua, March 27, 2025
This photo taken on March 26, 2025 shows the U-shaped subgrade section of the Shantou Bay undersea tunnel in Shantou City, south China's Guangdong Province, on March 26, 2025. The Shantou Bay undersea tunnel, the world's first single-hole double-track undersea tunnel with a designed speed of 350 km per hour, was broken through on Wednesday. The 9,781-meter-long tunnel is a project of the Shantou-Shanwei high-speed railway. (Xinhua/Liu Dawei)
