Montage was introduced by Sergei Eisenstein and were used in 1920s in Soviet Russia.
Montageis a technique in film editing in which a series of short shots are edited into a sequence to condense space, time, and information. The term has been used in various contexts. It was introduced to cinema primarily by Sergei Eisenstein,and early Soviet directors used it as a synonym for creative editing.
From Montage (filmmaking), Wikipedia
Montage is a juxtaposition of different shots, therefore the audience must watch until the last shot, or they won’t know the meaning of this video.
Montage doesn’t tell a linear story (which means a series of events in which one follow another one directly).
Juxtaposition: Putting the things that are not similar next to each other.
＊Practice to use montage to edit a 20 seconds video.