Gǎi le wǔ bǎn fāng'àn, wǒ duì zhège xiàngmù lèijuébù'ài.
After five revisions of the proposal, I've lost all enthusiasm for this project.
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Internet slang from around 2013, originally about romantic burnout. Now widely used for any kind of 'too exhausted to keep caring' feeling — work, projects, fandoms. Stays informal — fine in chat, avoid in formal writing.
memory
Compressed from 很累,感觉不会再爱了 ('so tired, I feel I'll never love again') — take one character from each of the four key concepts: 累 tired, 觉 feel, 不 not, 爱 love.