This migration for Spring Festival -- the Chinese New Year, can be a spectacular sight as millions of city-dwellers get on trains, boats, and planes to go home. Zhao Yunfei goes to a high-speed railway station near Beijing to see this movement of people like no other.
The massive human migration, people in China call it Chunyun, and it's the biggest of its kind around the globe.
Checking passengers' tickets with their IDs, for Yang Bin, the job leaves little room for error. More than 2,000 tickets go through his hands every day.
ZHAO YUNFEI TIANJIN Getting a seat is a competitive affair. Some people wait in line for days. And even online, tickets sell fast.
These millions of people travel a combined 1.2 billion kilometers on trains, cars and buses, and planes during this migration season. That's the distance from here to Saturn.
The biggest chunks of outbound trips come from Guangdong, Shanghai and Beijing. And the major destinations are the provinces of Hunan, Hubei and Henan. When the Spring Festival celebration is over, the flow is reversed.
ZHAO YUNFEI TIANJIN Fast developing infrastructure has made this homeward march much quicker for many. The total length of China's high-speed railway is 25 thousand kilometers. That's more than 60 percent of the global total. China's first self-developed bullet train "Fuxing" boasts a consistent speed of 350 kilometers per hour.
Every year, nearly 400 million trips are accomplished by train during the new year migration season. That means more than 100 passengers hop onto trains every second. And that lasts for 40 days, non-stop. Speed requires precision. For station staff like Yang Bin, it is a race against time to get everyone on board.
Yang Bin witnesses stories of individuals eager for reunions with loved ones. He is one of those who have to be busy, while others go on holiday to be happy.