Technicians work at the underground utility tunnel in Baiyin city, Northwest China’s Gansu province, May 29, 2019. The 2.238 billion yuan (about $324 million) project, a 26.25 km-long tunnel capable of installing 8 kinds of utility pipes, was completed recently.[Photo/Xinhua]
Photo taken on May 29, 2019 shows the utility pipes of the underground utility tunnel in Baiyin city, Northwest China’s Gansu province.[Photo/Xinhua]
Aerial photo taken on May 29, 2019 shows the scenery of Beijing Road after the underground utility tunnel was established in Baiyin city, Northwest China’s Gansu province. [Photo/Xinhua]
An undated screen shot shows the illustration of structure of the underground utility tunnel in Baiyin city, Northwest China’s Gansu province.[Photo/Xinhua]
Photo taken on May 29, 2019 shows the utility pipes of the underground utility tunnel in Baiyin city, Northwest China’s Gansu province.[Photo/Xinhua]
Technicians work at the underground utility tunnel in Baiyin city, Northwest China’s Gansu province, May 29, 2019.[Photo/Xinhua]
