In the film, Terry kept repeating "like in a dream", gambling, murder, and all sins were the nightmares that kept him awake later. I can't help myself, I can't extricate myself.
It is in this balance, hesitation, and lack of sobriety that the story continues to develop and appears very real. Although it is not as precise and neat as the professional killer who is portrayed as a hero, it is not so cold-blooded and ritualized. Everyone goes through this struggle many times.
Then the ending came, everything returned to the original point, it was the wake up of the dream, everything was the same, who would know that the outcome of life and death in the dream was staged in turn.
This is how the structure forms a ring.
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