Stewardesses interact with children on a bullet train from Nanchang of east China's Jiangxi Province to Nanjing of east China's Jiangsu Province, 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/Bao Gansheng)