城市太空回忆好浓记忆好满遗忘好难
[chéng shì tài kōng huí yì hăo nóng jì yì hăo măn yí wàng hăo nán]
This translates to 'The city is too vast but memories are so vivid, they’re hard to forget,' capturing the feeling of nostalgia and difficulty in letting go of past experiences within a big city.