Maintenance worker Yang Yong cleans and checks the components of a filter at the north maintenance workshop of the Zhengzhou locomotive depot in Zhengzhou, central China's Henan Province, Aug. 6, 2020. As a result of the growing travel demand in summer, the amount of maintenance tasks at the north maintenance workshop of the Zhengzhou locomotive deport is on a rise. More than 100 maintenance workers on Thursday were busy repairing trains at the workshop where it was hot and stuffy. (Xinhua/Li An)
