Railway passengers set to depart from China's capital Beijing to southwest China's Chongqing, Jan. 24, 2016 on Train No. 3603, the first train of this year's 40-day-longSpring Festival travel rush. Over 2.9 billion trips will be made around the Spring Festival travel rush this year, traffic authorities estimated. Spring Festival, China's most important holiday centering around family reunions, will fall on Feb. 8. [Photo by Chen Boyuan / China.org.cn]