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billion journeys: World's biggest human migration begins in China. (CNN) — Lunar New Year might still be two weeks away, but China is already bracing itself for an annual homecoming of epic proportions.
Considered the largest human migration on the planet, Chunyun -- the 40-day period when Chinese people head home to celebrate the Lunar New Year Spring Festival with their families -- officially began on January 10 and will end on February 18.
