When the King of Chu received a threatening message from the Duke of Qi, he replied with a masterpiece of diplomatic wit: "Your lordship resides in the northern sea; I reside in the southern sea. We are as unrelated as wind, horses, and cows."
The phrase "风马牛不相及" (as unrelated as wind, horses, and cows) became the Chinese idiom for things that have absolutely no connection to each other. The image is deliberately absurd: wind, horses, and cows occupy entirely different categories of existence. To connect them is meaningless.
楚子使与师言曰：「君处北海，寡人处南海，唯是风马牛不相及也。」
楚子使与师言曰：「君处北海，寡人处南海，唯是风马牛不相及也。」
Reflection & Analysis · 寓意解读
Core Wisdom
Not everything is connected. The wisdom is in knowing which connections are real and which are imagined — and having the courage to say "these have nothing to do with each other."
The King of Chu's diplomatic response is both witty and strategic. By claiming that Qi and Chu are "as unrelated as wind, horses, and cows," he is rejecting the premise of the threat entirely. If there is no connection, there is no conflict.
The idiom is now used to dismiss irrelevant arguments, false analogies, and forced comparisons. It is the Chinese way of saying "that's apples and oranges" — but with more literary flair.