- For 40 days from January 10 to February 18, China celebrates the Lunar New Year Spring Festival, or Chinese New Year.
- China's government estimates people will take 3 billion trips to celebrate in the largest annual human migration in the world.
- This year it could be especially congested as the holiday overlaps with university students' winter holidays.
- $4.
There's no worse time to travel in China.
From January 10 to February 18, for 40 days, China is celebrating the Lunar New Year Spring Festival, also known as Chinese New Year. This year it could be especially congested as the holiday overlaps with university students' winter holidays.
Trains, planes, roads, and ferries will be filled to the brim as people journey home to be with their families.
One of the big reasons for the mass movement is that China is filled with workers who live in rural towns but work in the cities. Many of them, $4, head home for the celebrations.
Here's what the $4 looks like in photos.