冷血冷心姑娘无血无心
[lĕng xuè lĕng xīn gū niáng wú xuè wú xīn]
'A Bloodless and Heartless Girl' portrays an aloof individual, seemingly detached from emotions and lacking empathy. Such a nickname can either be ironic or a protective mask, used by someone wanting to project emotional invulnerability or toughness, possibly after experiencing hardships which led them to guard their feelings.