SHANGHAI, April 4 (Xinhua) -- China's domestically developed high-speed-rail shield tunneling machine "Linghang" has successfully completed the construction of the 11.18-kilometer underwater section of the Chongming-Taicang Yangtze River tunnel.

The tunnel linking Shanghai's Chongming District and Taicang City in east China's Jiangsu Province runs 14.25 km in total. Once operational, it will allow high-speed trains to pass beneath the Yangtze without reducing speed.