“风马牛不相及”一语出自《左传·僖公四年》:“(齐侯)逐伐楚,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。’”何谓“风马牛不相及”?据《辞海》、《辞源》、《古文观止》等书记述,至少有以下四种解释。一说“风”是走失的意思,谓齐楚相去甚远,即使马牛走失, The phrase “having no match for wind and horses” comes from the “Zuo Zhuan Gong Gong 4 Years”: “(Qihou) is cut by Chu, and Chu Zhe’s enlightenment with the teacher: ’The Jun is in the North Sea, but the Noble is in the South China Sea. Horses and cattle are not equal.” “What is “there is no match for wind and horses”? According to the “Shi Hai,” “Ci Yuan,” and “Ancient Wen Guan Zhi,” and other books, there are at least the following four explanations. One said that “wind” is lost, meaning that Qi Chu is far away, even if the horse is lost.