“Chunyun, also referred to as the Spring Festival travel season or the Chunyun period, is a period of travel in China with extremely high traffic load around the time of the Chinese New Year.”
https://en.wikipedia.org/wiki/Chunyun
“Chunyun, also referred to as the Spring Festival travel season or the Chunyun period, is a period of travel in China with extremely high traffic load around the time of the Chinese New Year.”
https://en.wikipedia.org/wiki/Chunyun