《战国策·燕一·齐伐宋宋急》
一个强大的齐国：燕国都不能同它抗衡，现在用三个齐国米面对燕国，那祸患可就大了。
夫一齐之强，而燕犹不能支也，今乃以三齐临燕，其祸必大矣。
The power of Qi is so great that even the Yan state cannot fight against it. Now, you use three Qi states to face the Yan state, so the trouble will be even greater.