Passengers wait for trains at the Shenyang North Railway Station in Shenyang, capital of northeast China's Liaoning Province, Feb. 21, 2018. On the last day of the Spring Festival holiday, China greets a travel peak for returning to workplace. (Xinhua/Yang Qing)

Passengers wait for a train at the Shenyang North Railway Station in Shenyang, capital of northeast China's Liaoning Province, Feb. 21, 2018. On the last day of the Spring Festival holiday, China greets a travel peak for returning to workplace. (Xinhua/Yang Qing)

Passengers queue to take a train at the Jiujiang Railway Station in Jiujiang, east China's Jiangxi Province, Feb. 21, 2018. On the last day of the Spring Festival holiday, China greets a travel peak for returning to workplace. (Xinhua/Hu Guolin)

Passengers are helped at the Nanchang West Railway Station in Nanchang, capital of east China's Jiangxi Province, Feb. 21, 2018. On the last day of the Spring Festival holiday, China greets a travel peak for returning to workplace. (Xinhua/Bao Gansheng)

Cars board a ferry ship in Nantong, east China's Jiangsu Province, Feb. 21, 2018. On the last day of the Spring Festival holiday, China greets a travel peak for returning to workplace. (Xinhua/Xu Congjun)

Children play at a waiting room of a bus station in Nantong, east China's Jiangsu Province, Feb. 21, 2018. On the last day of the Spring Festival holiday, China greets a travel peak for returning to workplace. (Xinhua/Xu Jinbai)

Passengers check in at the Changzhou Railway Station in Changzhou, east China's Jiangsu Province, Feb. 21, 2018. On the last day of the Spring Festival holiday, China greets a travel peak for returning to workplace. (Xinhua/Chen Wei)

Passengers queue to take trains at the Nanchang West Railway Station in Nanchang, east China's Jiangxi Province, Feb. 21, 2018. On the last day of the Spring Festival holiday, China greets a travel peak for returning to workplace. (Xinhua/Song Zhenping)

Passengers arrive at the Beijing South Railway Station in Beijing, capital of China, Feb. 21, 2018. On the last day of the Spring Festival holiday, China greets a travel peak for returning to workplace. (Xinhua/Xing Guangli)