Passengers crowd the Shanghai Hongqiao railway station as they wait to board their trains to head to their hometowns for the Lunar New Year holiday, in Shanghai on February 3, 2016. Over 2.9 billion trips will be made around China during the 40-day “Spring Festival” travel rush, which kicked off on January 24, Chinese authorities estimated. The Spring Festival, this year being the Year of the Monkey. (Photo by AFP Photo/Stringer)
