黑心hēixīnTop 25000Meanings1. ruthless and lacking in conscience2. vicious mind full of hatred and jealousy3. black core (flaw in pottery)Characters used黑black心heartExamples1很hěn多duō公立学校gōnglìxuéxiào的de食堂shítáng都dōu很hěn黑心hēixīn。Many public school cafeterias are unscrupulous.