{
  "id": 27828,
  "title": "China to build world's fastest underwater high-speed rail after record-breaking river tunnel",
  "url": "https://urgent.news/2026/07/31/china-to-build-worlds-fastest-underwater-high-speed-rail-after-record",
  "topic": "ai",
  "section": "AI",
  "published": "2026-07-31T23:01:59.000Z",
  "source": {
    "name": "VnExpress International",
    "slug": "vnexpress-international",
    "url": "https://e.vnexpress.net/news/news/traffic/china-to-build-world-s-fastest-underwater-high-speed-rail-after-record-breaking-river-tunnel-5103792.html"
  },
  "original_language": "en",
  "account": "China is set to construct the world's fastest underwater high-speed rail, following the completion of a record-breaking river tunnel beneath the Yangtze River. The achievement, realized by the country's largest-diameter tunnel boring machine, sets a new benchmark for underwater tunnel construction. This 14-kilometer-long tunnel, located 89 meters below the river, will connect Chongming Island, China's third-largest island, with mainland China's high-speed rail network. The project, expected to be completed by the end of this year, will see trains traveling at a speed of 350 kilometers per hour, with the journey beneath the river taking approximately two minutes. Engineers have emphasized the need for millimeter-level precision to ensure the safety and comfort of passengers traveling at such high speeds. The Chongtai Yangtze River Tunnel, costing over 7.1 billion yuan, is a crucial component of the Shanghai–Chongqing–Chengdu High-Speed Railway, one of China's flagship transportation corridors linking the country's eastern coast with its interior.",
  "summary": "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.",
  "key_points": [],
  "editors_take": null,
  "illustration": null,
  "coverage": {
    "outlets": 1,
    "also_reported_by": []
  },
  "ai_generated": true,
  "disclaimer": "Summaries, key points and the editor’s take are written by software from other outlets’ reporting and may contain errors — always check the linked original."
}