梦里梦不出醒不来的梦
[mèng lĭ mèng bù chū xĭng bù lái de mèng]
Translating it gives us ‘a dream in dreams can never wake up from’. In this phrase, there are dual meanings: firstly, it can indicate an endless dream, where people cannot find a way out. Secondly, it also metaphorically illustrates some situations, which cannot be realized as a dream within another dream - reflecting an unattainable ideal or situation.