Hundreds of millions of Chinese are now traveling home to celebrate the Lunar New Year. It's the largest human migration on earth -- and it stretches the country's transportation system to the limit.
Travelers wait at the West Railway Station in Beijing. In recent decades, millions of Chinese have been lured from rural to urban areas by higher pay. Many return home only once per year.
By Charles Riley @CRrileyCNN - Last updated February 07 2013 08:30 PM ET
