The photo, taken on January 9, shows mechanics check a “red-eye” bullet train (high-speed trains running from midnight to 6:00 a.m. every day) at a maintenance station in Changsha. In order to meet passengers’ travel demand during the Spring Festival travel rush, Changsha will add 17 pairs of "red-eye” bullet trains to increase railway carrying capacity. (Photo/Fu Cong, Hunan Daily)

Source: en.changsha.gov.cn