Passengers are seen at Nanjing Railway Station in east China's Jiangsu Province on Jan. 31, 2018. About 2.98 billion trips are expected to be made during the 2018 Spring Festival travel rush, known as the Chunyun, between February 1 and March 12, Lian Weiliang, deputy head of the National Development and Reform Commission (NDRC) told a press conference. (Xinhua/Su Yang)