TOPSHOT - Passengers head back to their hometowns for the "Spring Festival" or Lunar New Year from Beijing West Railway Station in Beijing on January 25, 2017.
Hundreds of millions of migrant workers are travelling to far-flung towns and cities to see their families and celebrate the most important holiday on the Chinese calendar, which falls on January 28 this year.  / AFP / Fred DUFOUR        (Photo credit should read FRED DUFOUR/AFP/Getty Images)