没心没肺活着不累有心有肺活着太累
[méi xīn méi fèi huó zhe bù lĕi yŏu xīn yŏu fèi huó zhe tài lĕi]
If I live aimlessly, there won't be any pain and exhaustion, but a conscious life will make people tired. Here '心、肺' represents one’s feeling and soul, which could mean if the user decides not to care about the surroundings and go by himself, he wouldn't get affected. While having emotions and cares towards the surroundings leads to stress. In general, it expresses an escape psychology from life pressure.