只有睡觉的时候不困只有心碎的时候不痛
[zhĭ yŏu shuì jué de shí hòu bù kùn zhĭ yŏu xīn suì de shí hòu bù tòng]
The phrase translates into 'only not sleepy when sleeping; only not hurt when heartbroken'. It expresses paradoxical emotions indicating one may only fully rest while in bed, and only really feels the lack of pain in the depths of sadness, possibly alluding to a kind of cathartic acceptance or resignation.