Maintenance work underway across China for Spring Festival travel rush

Aerial photo taken on Jan. 27, 2021 shows bullet trains at a maintenance base in Lanzhou, northwest China's Gansu Province, Jan. 27, 2021. Lanzhou section of China Railway Lanzhou Bureau Group Co., Ltd. carries out maintenance work for trains to prepare for the country's annual Spring Festival travel rush. (Xinhua/Ma Xiping)