Passengers prepare to board the train K4051 to Nantong City in east China's Jiangsu Province, at the Beijing Railway Station in Beijing, capital of China, Jan. 21, 2019, the first day of the 2019 Spring Festival travel rush. Hundreds of millions of Chinese return to their hometowns every year for the Lunar New Year, or Spring Festival, family reunions, thus forming the Spring Festival travel rush. The Spring Festival, or the Year of the Pig in the Chinese lunar calendar, will begin on Feb. 5 this year. The 40-day 2019 Spring Festival travel rush started on Jan. 21, with 3 billion trips expected to be made. (Xinhua/Xing Guangli)