Jùhuì shàng láile ge sàngqìguǐ, qìfēn quán méi le.
A killjoy showed up at the party and the whole vibe died.
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Colloquial. The 鬼 'ghost' suffix is a common Chinese way to label types of people (酒鬼 drunkard, 烟鬼 smoker, 懒鬼 lazybones) — usually mocking but not seriously offensive.