China to build world's fastest underwater high-speed rail after record-breaking river tunnel
https://e.vnexpress.net/news/news/traffic/china-to-build-world-s-fastest-underwater-high-speed-rail-after-record-breaking-river-tunnel-5103792.html">https://vcdn1-english.vnecdn.net/2026/07/31/pexels-liuuu-1785485871-3860-1785485877.jpg?w=900&h=0&q=100&dpr=1&fit=crop&s=oezEno5D4mnpBLAFhurGSQ" />China has completed excavating a tunnel beneath the Yangtze River, the country's largest waterway, marking a major milestone for a project that will connect Shanghai's Chongming Island with neighboring Jiangsu Province and expand the national high-speed rail network.