- 黑心肠 hēixīncháng black heartwickedness; evil mind; someone who is cold-blooded and ruthless
- 黑心肝 hēixīngān wicked person(bound form) an evil or dishonest person; black-hearted
- 黑心食品 hēixīnshípǐn unsafe food productsdangerous or contaminated food products manufactured or sold by unscrupulous businesses to maximize profit; food that is marketed as wholesome despite being harmful to health