风马牛不相及

fēngmǎniúbùxiāngjí

风马牛不相及 — fēngmǎniúbùxiāngjí

  1. to be completely unrelated to one another; irrelevant

    这两件事风马牛不相及,别混为一谈。 zhè liǎngjiànshì fēngmǎniúbùxiāngjí bié hùnwéiyītán — These two matters are completely unrelated; don't confuse them.