China's longest tunnel under lake open to traffic

A vehicle moves on the highway of the tunnel under Donghu Lake in Wuhan, capital of central China's Hubei Province, Dec. 28, 2015. The Donghu Lake tunnel, China's longest tunnel under a lake, was open to traffic on Monday. A car could run through the 10.6-kilometer-long tunnel in around 15 minutes. (Xinhua/Cheng Min)