所谓的天长不过如此所谓的地久仅此而已
[suŏ wèi de tiān zhăng bù guò rú cĭ suŏ wèi de dì jiŭ jĭn cĭ ér yĭ]
Roughly translated as 'So-called Eternal Love Isn’t All It’s Cracked Up To Be', this expresses cynicism towards romanticized notions of love that claim permanence ('eternal as heaven' or 'enduring as earth'). Suggests such promises may fall short of expectations or reality.