《吕氏春秋·览·先识览》
秦军的三个主帅很担心，商议说； 我们行军几千里，多次穿越其他诸侯国的土地去偷袭人家，还没到，人家就已经先知道了，这样看来，他们的准备一定已经很充分了。 
三帅乃惧而谋曰： 我行数千里，数绝诸侯之地以袭人，未至而人已先知之矣，此其备必已盛矣。 
The three Qin army commanders were very worried, and discussed the situation, saying: "We have marched thousands of li, crossing the lands of many feudal lords to attack them by surprise, but before we arrived, they already knew about it. From this, it seems that they must be very prepared."