《战国策·赵二·苏秦从燕之赵始合从》
大王如果与秦国结盟，秦国必然去侵略韩、魏；大王与齐国结盟，齐国必然去侵略楚、魏；魏国衰弱后就必然割河外之地；韩国衰弱了，就会献出宜阳。
大王与秦，则秦必弱韩、魏；与齐，则齐必弱楚、魏。魏弱则割河外，韩弱则效宜阳。
If the King allies with the Qin State, the Qin will definitely invade the Han and Wei states; if the King allies with the Qi state, the Qi will definitely invade the Chu and Wei states; after the Wei state is weakened, it will definitely cede the land outside the Yellow River; after the Han state is weakened, it will offer Yinyang.