This photo taken on April 9, 2025 shows an interior view of "Jianghai," a giant self-developed tunnel boring machine deployed for the construction of the Haitai Yangtze River Tunnel, in Haimen, east China's Jiangsu Province. China on Wednesday deployed a giant self-developed tunnel boring machine (TBM) for the construction of the world's longest underwater highway TBM tunnel. (Xinhua/Ji Chunpeng)