Answer: International Day of Migrants.
In view of the large number and increasing number of migrants in the world, the United Nations General Assembly proclaimed 18 December 2000 as International Migration Day (also known as "International Migrants Day"). The poster's photo of Yi Yi Qianxi corresponds to the harmonic stem "migration", and the stills of the movie "The Wandering Earth" hint at the migration activities, which tells the story of human beings pushing the earth away from the solar system after a disaster, which is a science fiction depiction and a common migration of all mankind. S.H.E.'s song "Migratory Birds" also hints at migration.
Edited by Wu Longzhen
!["The Wandering Earth 2" broke 1 billion at the box office! In addition to the big scene, there are 6 details that cannot be ignored[fig]](data:image/gif;base64,R0lGODlhAQABAIAAAP///wAAACwAAAAAAQABAAACAkQBADs=)