Perfection is difficult to achieve, and cowardly negative energy is the inner evil.
Weak Nina is easy to suffer and hopes to have a strong heart to face external damage, so the evil Nina personality is independent from the Nina split.
For Nina, strong is evil.
The strong side is always restrained by the weak, and the more restrained, the more you want to break free.
Evil must control the weak, and the weak are afraid of evil.
"Swan Lake" is an opportunity. The confrontation between white swans and black swans is like the confrontation between weak Nina and evil Nina.
The black swan gave the evil Nina an exit. In life, Nina is limited and required to be bound, so weak personality takes the lead. The role of the black swan needs the expression of inner evil, so the evil Nina takes this opportunity to try to replace the weak Nina.
"You're going to replace me!" Nina said this sentence, not to Lily who was wearing black swan makeup in the dressing room she imagined, but to herself. She gave herself a huge wound, and in the last scene of the show, weak Nina woke up and the bloody white swan committed suicide.
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