The photo, taken on February 4, the seventh day of the Chinese Lunar New Year, shows passengers preparing to enter the Changsha South Railway Station. The station saw a peak in the number of passengers that day as the Spring Festival holiday ended. (Photo/Gu Pengbo, Hunan Daily)

The photo, taken on February 4, the seventh day of the Chinese Lunar New Year, shows passengers preparing to board a train at the Changsha South Railway Station. The station saw a peak in the number of passengers that day as the Spring Festival holiday ended. (Photo/Gu Pengbo, Hunan Daily)

The photo, taken on February 4, the seventh day of the Chinese Lunar New Year, shows passengers waiting in the waiting hall of the Changsha South Railway Station. The station saw a peak in the number of passengers that day as the Spring Festival holiday ended. (Photo/Gu Pengbo, Hunan Daily)

The photo, taken on February 4, the seventh day of the Chinese Lunar New Year, shows passengers lining up to pass through a check-in gate at the Changsha South Railway Station. The station saw a peak in the number of passengers that day as the Spring Festival holiday ended. (Photo/Gu Pengbo, Hunan Daily)

The photo, taken on February 4, the seventh day of the Chinese Lunar New Year, shows passengers preparing to board a train at the Changsha South Railway Station. The station saw a peak in the number of passengers that day as the Spring Festival holiday ended. (Photo/Gu Pengbo, Hunan Daily)

The photo, taken on February 4, the seventh day of the Chinese Lunar New Year, shows passengers waiting in the waiting hall of the Changsha South Railway Station. The station saw a peak in the number of passengers that day as the Spring Festival holiday ended. (Photo/Gu Pengbo, Hunan Daily)