A mechanic inspects a bullet train's overhead contact system at a maintenance base in Yinchuan, northwest China's Ningxia Hui Autonomous Region, July 11, 2021. China Railway Lanzhou Bureau Group Co., Ltd. has carried out maintenance work for trains on a daily basis to ensure train safety in the summer heat. (Xinhua/Feng Kaihua)
A worker cleans a bullet train at a maintenance base in Yinchuan, northwest China's Ningxia Hui Autonomous Region, July 10, 2021. China Railway Lanzhou Bureau Group Co., Ltd. has carried out maintenance work for trains on a daily basis to ensure train safety in the summer heat. (Xinhua/Feng Kaihua)
Mechanics inspect a bullet train at a maintenance base in Yinchuan, northwest China's Ningxia Hui Autonomous Region, July 10, 2021. China Railway Lanzhou Bureau Group Co., Ltd. has carried out maintenance work for trains on a daily basis to ensure train safety in the summer heat. (Xinhua/Feng Kaihua)
A mechanic inspects a bullet train at a maintenance base in Yinchuan, northwest China's Ningxia Hui Autonomous Region, July 11, 2021. China Railway Lanzhou Bureau Group Co., Ltd. has carried out maintenance work for trains on a daily basis to ensure train safety in the summer heat. (Xinhua/Feng Kaihua)
Mechanics inspect a bullet train at a maintenance base in Yinchuan, northwest China's Ningxia Hui Autonomous Region, July 10, 2021. China Railway Lanzhou Bureau Group Co., Ltd. has carried out maintenance work for trains on a daily basis to ensure train safety in the summer heat. (Xinhua/Feng Kaihua)
A mechanic inspects a bullet train's overhead contact system at a maintenance base in Yinchuan, northwest China's Ningxia Hui Autonomous Region, July 11, 2021. China Railway Lanzhou Bureau Group Co., Ltd. has carried out maintenance work for trains on a daily basis to ensure train safety in the summer heat. (Xinhua/Feng Kaihua)
