Zhengzhou carries out capacity expansion project to adapt to traffic volume

A power worker upgrades equipment at a transformer substation in Qixian County, central China's Henan Province, Sept. 17, 2018. In order to cope with the increasing traffic volume of Beijing-Guangzhou line, China Railway Inc., Zhengzhou Bureau recently carried out the capacity expansion project at transformer substations in Qixian County. (Xinhua/Li An)