Passengers are pictured at Xigaze Station in Xigaze, southwest China's Xizang Autonomous Region, Jan. 27, 2024. China officially ushered in its largest annual population migration on Friday, 15 days ahead of the Spring Festival, or the Lunar New Year, with record-breaking journey numbers expected. (Photo by Tenzin Norbu/Xinhua)

A staff member views the train departing at Xigaze Station in Xigaze, southwest China's Xizang Autonomous Region, Jan. 27, 2024. China officially ushered in its largest annual population migration on Friday, 15 days ahead of the Spring Festival, or the Lunar New Year, with record-breaking journey numbers expected. (Xinhua/Liu Wenbo)

A staff member instructs passengers at Xigaze Station in Xigaze, southwest China's Xizang Autonomous Region, Jan. 27, 2024. China officially ushered in its largest annual population migration on Friday, 15 days ahead of the Spring Festival, or the Lunar New Year, with record-breaking journey numbers expected. (Photo by Tenzin Norbu/Xinhua)