没关系，别放在心上

The phrase '没关系' (méi guānxi) literally translates to 'no relation' or 'it doesn't matter.' It is a common idiom used to express that something is not a problem, or that one should not worry about it. The '没' (méi) is a negative prefix, and '关系' (guānxi) means 'relation' or 'connection.' The phrase '别放在心上' (bié fàng zài xīn shàng) literally means 'don't put it on your heart,' which is an idiomatic expression advising someone not to take something to heart, to not dwell on it, or to not be upset by it. '别' (bié) means 'don't' or 'other,' '放' (fàng) means 'to put' or 'to place,' '在' (zài) is a preposition meaning 'at' or 'in,' '心' (xīn) means 'heart,' and '上' (shàng) means 'on' or 'up.' Both phrases individually convey a sense of dismissal of a problem or concern, and when combined, they strongly reassure someone not to worry or be upset. The combined phrase is a polite and empathetic way to console someone or tell them not to fret over a situation. Its usage is deeply embedded in everyday Chinese communication, reflecting cultural values of harmony and emotional reassurance. While pinpointing an exact origin date for such common phrases is difficult, their components and grammatical structures are consistent with classical and modern Chinese language evolution, suggesting a long history of use in various forms. The concept of not taking things to heart or dismissing worries is a universal human sentiment, and these phrases offer a culturally specific way of expressing it in Chinese.