led the trend of musicals at that time, (nowadays Bollywood movie routines) led the development of sound films. Perhaps the reason for winning the award is that this film was the forerunner at the time. As in today's era, there will be good opportunities to be the first mover.
From silent film to sound, from mono to stereo, from traditional craftsmanship to the emergence of audio workstations, each major technological revolution brings us new artistic feelings, often accompanied by newer art forms. As it is today, 3D to IMAX gives us a better viewing experience.
Technological changes:
In the use of "movie language", the film uses the "audio-visual counterpoint" for the first time (Hank heard the sound of cars driving on the street indoors, knowing that Queenie had followed Jack leaves, so the close-up of his face reveals sorrow, and immediately decides to use the aggressive method on Eddie, asking him to go and chase Queenie back immediately)
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