《左传·僖公·僖公十五年》
现在用外国出产的马来驾车，从事战斗，等到一害怕而失去正常状态，就会不听指挥了。
今乘异产以从戎事，及惧而变，将与人易。
Now, you are using horses from foreign countries to pull your war chariots, and engage in battle. Wait until they are terrified and lose their normal state, then they will not listen to commands.