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Construction of World's Longest Undersea Railway Tunnel - China

Technicians mark the 2,500th segment ring in the Jintang undersea tunnel of the Ningbo-Zhoushan Railway, as the tunnel boring machine exceeds a tunneling mileage of 5,000 meters in Zhoushan, east China's Zhejiang Province, Nov. 28, 2025. China's self-developed tunnel boring machine "Dinghai" exceeded a tunneling mileage of 5,000 meters on Friday at the Jintang undersea tunnel between cities of Ningbo and Zhoushan in east China's Zhejiang Province. The milestone marks the completion of over 80 percent of the tunneling workload in Zhoushan section of Jintang undersea tunnel. The tunnel, stretching 16.18 km, is an crucial part for the Yongzhou (Ningbo-Zhoushan) high-speed railway, and is set to be the world's longest undersea railway tunnel upon completion. Photo by Huang Zongzhi/Xinhua/ABACAPRESS.COM

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Construction of World's Longest Undersea Railway Tunnel - China

Workers pose for a group photo inside the tunnel boring machine "Dinghai" in celebration of the machine exceeding a tunneling mileage of 5,000 meters in Zhoushan, east China's Zhejiang Province, Nov. 28, 2025. China's self-developed tunnel boring machine "Dinghai" exceeded a tunneling mileage of 5,000 meters on Friday at the Jintang undersea tunnel between cities of Ningbo and Zhoushan in east China's Zhejiang Province. The milestone marks the completion of over 80 percent of the tunneling workload in Zhoushan section of Jintang undersea tunnel. The tunnel, stretching 16.18 km, is an crucial part for the Yongzhou (Ningbo-Zhoushan) high-speed railway, and is set to be the world's longest undersea railway tunnel upon completion. Photo by Huang Zongzhi/Xinhua/ABACAPRESS.COM

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Construction of World's Longest Undersea Railway Tunnel - China

A worker assembles a segment ring inside the tunnel boring machine "Dinghai" in Zhoushan, east China's Zhejiang Province, Nov. 28, 2025. China's self-developed tunnel boring machine "Dinghai" exceeded a tunneling mileage of 5,000 meters on Friday at the Jintang undersea tunnel between cities of Ningbo and Zhoushan in east China's Zhejiang Province. The milestone marks the completion of over 80 percent of the tunneling workload in Zhoushan section of Jintang undersea tunnel. The tunnel, stretching 16.18 km, is an crucial part for the Yongzhou (Ningbo-Zhoushan) high-speed railway, and is set to be the world's longest undersea railway tunnel upon completion. Photo by Huang Zongzhi/Xinhua/ABACAPRESS.COM

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Construction of World's Longest Undersea Railway Tunnel - China

Technicians operate at the control room of the tunnel boring machine "Dinghai" in Zhoushan, east China's Zhejiang Province, Nov. 28, 2025. China's self-developed tunnel boring machine "Dinghai" exceeded a tunneling mileage of 5,000 meters on Friday at the Jintang undersea tunnel between cities of Ningbo and Zhoushan in east China's Zhejiang Province. The milestone marks the completion of over 80 percent of the tunneling workload in Zhoushan section of Jintang undersea tunnel. The tunnel, stretching 16.18 km, is an crucial part for the Yongzhou (Ningbo-Zhoushan) high-speed railway, and is set to be the world's longest undersea railway tunnel upon completion. Photo by Huang Zongzhi/Xinhua/ABACAPRESS.COM

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Construction of World's Longest Undersea Railway Tunnel - China

A technician checks operation inside the tunnel boring machine "Dinghai" in Zhoushan, east China's Zhejiang Province, Nov. 28, 2025. China's self-developed tunnel boring machine "Dinghai" exceeded a tunneling mileage of 5,000 meters on Friday at the Jintang undersea tunnel between cities of Ningbo and Zhoushan in east China's Zhejiang Province. The milestone marks the completion of over 80 percent of the tunneling workload in Zhoushan section of Jintang undersea tunnel. The tunnel, stretching 16.18 km, is an crucial part for the Yongzhou (Ningbo-Zhoushan) high-speed railway, and is set to be the world's longest undersea railway tunnel upon completion. Photo by Huang Zongzhi/Xinhua/ABACAPRESS.COM

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Zhejiang LHD Ocean Tidal Power Station

Zhejiang LHD Ocean Tidal Power Station in Xiushan Island, Daishan County, Zhoushan City, Zhejiang Province, China October 15, 2025.

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