心冷不过憔悴
[xīn lĕng bù guò qiáo cuì]
'The cold heart surpasses exhaustion': A profound sadness that transcends mere tiredness. One who bears deep disappointment and melancholy, whose spirit appears haggard due to continuous mental strain and dejection beyond physical weariness, probably suffering much sorrow internally. Thus using this username to express one's feelings after enduring difficult or heart-breaking circumstances.