Toa55/iStock(SHANGHAI) -- The biggest holiday of the year has begun in China.
Starting Tuesday, relatives will reunite, red envelopes filled with money will be exchanged and massive feasts will be planned to celebrate the Lunar New Year.
Millions of people are hitting the roads, rails and skies to return home as part of the world's largest annual mass migration of humans.
Here’s what you need to know about the festivities:
What is Lunar New Year?
Lunar New Year celebrations occur across ..