风马牛不相及

風馬牛不相及
fēngmǎniúbùxiāngjí
idiom #76,561

Meanings

  1. 1 to have absolutely nothing to do with each other
  2. 2 completely unrelated; apples and oranges

Examples

HSK 2
Tā de huídá hé wèntí fēngmǎniúbùxiāngjí.
His answer had absolutely nothing to do with the question.
HSK 3
Nǐ jǔ de lìzi gēn wǒmen tǎolùn de huàtí fēngmǎniúbùxiāngjí.
The example you gave is completely unrelated to what we're discussing.
HSK 7-9
Zhè liǎng jiàn shì fēngmǎniúbùxiāngjí, nǐ bié yìng chě zài yīqǐ.
These two things have nothing to do with each other - stop forcing them together.

Tips

history
From 《左传·僖公四年》: the Duke of Chu says of Qi, 君处北海,寡人处南海,唯是风马牛不相及也 - 'Your realm is the North Sea, mine the South; even horses and cattle in heat couldn't find each other's territory.' here means animals in heat wandering off.
usage
Very common in modern speech to dismiss a false analogy or irrelevant comparison. Often follows /风马牛不相及.

Stroke Order

fēng
niú
xiāng