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. 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/Fan Peishen)