空有公主梦却没有公主命
[kōng yŏu gōng zhŭ mèng què méi yŏu gōng zhŭ mìng]
It translates to 'Dreams of being princess but no such destiny'. Reflecting disappointment from realizing one's dreams don't align with reality; perhaps implying aspirations that go unmatched by current circumstances. Often associated with irony and bittersweet situations.