It is the time for the largest human migration again! Hundreds of millions travel back home to celebrate the most important festival in China – Chunjie, also known as Spring Festival or Chinese New Year. To accommodate these many travelers, a highly developed rail system is essential. China's rail system is expecting half a billion passengers from January 14 to February 22. During those 40 days, more than 14,000 trains will be on the move each day to get everyone to their destination.