What is the creative background of Sunset Boulevard? Don't copy and paste a bunch of irrelevant information! ! I hope it can be longer, about 100 words. thank

You mean movies? If it is. Then my understanding is: Sunset Boulevard was in the 1930 s, nearly 20 years after the appearance of audio movies. Actors in the silent film era gradually faded out of the big screen for various reasons (some have pronunciation problems, some are too exaggerated), and there are many influential actors or directors in the silent film era. There is also the production monopoly of MGM (the predecessor of Hollywood), that is, the star system, which invites the big names in the silent film era and abandons them once they no longer have selling points, regardless of acting skills or ideas. Sunset Avenue is such an era when new people laugh and old people cry, and director billy wilder has also experienced this era. The silent films he watched as a child suddenly disappeared, perhaps in the form of black films, remembering the silent film era and satirizing the Hollywood system at that time for paying more attention to commercial effects. Sunset Boulevard was shot at 1950, which was the most popular era in film noir in the 1940s and 1950s. Film noir can perfectly express these themes with an oppressive temperament. It can be said that it is an atypical film noir, and there are not so many iconic features in style and technique. I think it's not typical because it doesn't put too much emphasis on low-key photography and projection, but oppresses the audience's sense with close-ups and close-ups