久溺回忆会致命深陷已经回不去
[jiŭ nì huí yì huì zhì mìng shēn xiàn yĭ jīng huí bù qù]
Acknowledges the dangers of being too immersed in memories or past feelings - it could become deadly (emotionally), and once you fall too deep into nostalgia, it's hard to come back out.