Construction of underground utility tunnel completes in China's Gansu

Photo taken on May 29, 2019 shows the utility pipes of the underground utility tunnel in Baiyin City, northwest China's Gansu Province. The 2.238 billion yuan (about 324 million U.S. dollars) project, a 26.25 km-long tunnel capable of installing 8 kinds of utility pipes, was completed recently. (Xinhua/Sadat)