kimi待你长大我定追
[kimi dài nĭ zhăng dà wŏ dìng zhuī]
With 'kimi' likely a phonetic transcription of Japanese (for 'you'), it means 'I will definitely chase/seek you when you grow up'. It signifies a determined, maybe romantic, promise, potentially reflecting patience, hopefulness, and commitment despite age differences or waiting periods.