有一种放弃叫心如死水
[yŏu yī zhŏng fàng qì jiào xīn rú sĭ shuĭ]
'Some Giving Up Means Your Heart Has Turned into Stagnant Water' conveys a feeling of despair and abandonment where there is nothing left to fight for, and thus all hope and desire seem lost, leaving the person emotionally unmoved and apathetic.