Why China's Sky Fills With Planes One Month a Year

Something happens each year that fills China's airspace with planes. 3 BILLION travelers in just 40 days, where's everyone going all of the sudden? ? Here's a hint: they're going home to celebrate the biggest event of the year. Lots of food to prep and decorations to hang. It's the Chinese New Year! ?? But why does the date of the Chinese New Year change each year? And what do those Chinese New Year animals mean anyway? You're about to find out! ?

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