The beginning of the film specifically emphasizes the habits of the cuckoo bird.
This story is to use human allegory to the cuckoo bird. The cuckoo lays eggs and produces offspring (rent salesman), two unfamiliar house buyers are forced to raise freaks (cuckoo lays eggs in other nests, chicks kick all other eggs or chicks to the ground and kill them Dead) The freak grows up and doesn't care about raising his adoptive father and mother to continue to reproduce the next generation and find a new host (The cuckoo grows up and leaves the nest to live on his own, the hard work of the bird parents is to help others forget the white-eyed wolf for a lifetime)
The male and female protagonists are the adoptive parents of the cuckoo chicks. They worked tirelessly to take care of the cuckoo chick and raised it, and then Fenfen's death was the helpless end of their lives. And this is the habit of cuckoo reproduction.
It feels like using people to interpret bird life. At the same time add a lot of meaning.
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