Aerial view of bullet trains waiting at a railway station during the first day of 2019 Chinese Spring Festival travel rush on January 21, 2019 in Nanjing, Jiangsu Province of China. The 40-day Chinese Spring Festival travel rush starts on Monday, lasting until March 1. The Spring Festival, or Chinese Lunar New Year, falls on February 5 this year. (Photo by VCG/VCG via Getty Images)
