This photo taken on Jan. 9, 2026 shows the tunnel boring machine "Xi Yi" in Changsha, central China's Hunan Province. The "Xi Yi" and "Xi Wang" tunnel boring machines designed for the construction of the intercity rail line S2 connecting Wuxi City and Yixing City in east China's Jiangsu Province rolled off on Friday. (Photo by Hu Anjiang/Xinhua)
Staff members conduct acceptance procedures for the tunnel boring machine "Xi Yi" in Changsha, central China's Hunan Province, Jan. 9, 2026. The "Xi Yi" and "Xi Wang" tunnel boring machines designed for the construction of the intercity rail line S2 connecting Wuxi City and Yixing City in east China's Jiangsu Province rolled off on Friday. (Photo by Hu Anjiang/Xinhua)
This photo taken on Jan. 9, 2026 shows the tunnel boring machine "Xi Wang" in Shanghai, east China. The "Xi Yi" and "Xi Wang" tunnel boring machines designed for the construction of the intercity rail line S2 connecting Wuxi City and Yixing City in east China's Jiangsu Province rolled off on Friday. (Photo by Su Jianguo/Xinhua)
