Workers prepare to replace power cables along the Tangshan-Hohhot railway line on March 19. The Tangshan-Hohhot railway has been upgrading its electricity network, to improve its transportation capacity. After the work, the railway line is expected to expand its annual total transportation volume to over 100 million metric tons. The Tangshan-Hohhot railway line connects Tangshan Port with West China and Mongolia, making it a key hub to transport coal from western China to the eastern regions. [Photo by Liu Lei/Xinhua]
Technicians carefully balance to check the electrical wiring of the Tangshan-Hohhot railway line on March 19. [Photo by Liu Lei/Xinhua]