In fact, the "circular space" that the director wants to express (no matter what it is, it may be the subconscious mind) is a reflection of my real life. For the first 35 years in the film, due to youth (or whatever), I lived an active life in a circular space, so I lived happily in the real world. And the Boss in the film is the red book (the book of demons), which conveys accidents. Circular space will give you choice (the price of freedom), if you accept the book of demons, your subconscious will transmit surprises, and then become negative, thus affecting the real world you become unfortunate. The grandmother in wedding dress at the beginning of the film is the accident victim made by the younger brother in the elevator (the light one, the heavy one is her husband), she did not choose to pass the book of demons in the last 35 years, so her real world should be Always happy. It wasn't until her subconscious died that another child (probably the devil himself) was sent to continue delivering the Devil's Book. As for what the director wants to tell us, that's a matter of opinion.
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