《三国志·魏书·桓二陈徐卫卢传》
陈泰估计敌军的实力是不能兵分三路的，况且用兵之道，向来以兵分几路为下等办法，凉州的部队也不应该越出境内，回复王经说： 辨别清楚敌军的确切消息，了解他们的行进方向，一定要等到他们东西两面合军我们再出兵。 当时姜维等人率领了数万人马到枹罕，奔赴狄道。
泰量贼势终不能三道，且兵势恶分，凉州未宜越境，报经： 审其定问，知所趣向，须东西势合乃进。 时维等将数万人至枹罕，趣狄道。
Chen Tai estimated that the strength of the enemy army would not be able to divide the troops into three groups. Moreover, the way to use troops has always been to divide the troops into several groups as an inferior method. The Liangzhou troops should not go beyond the territory, and replied Wang Jing: Identify the exact news of the enemy's army, understand their direction of march, and wait until they merge from the east and west before we send troops. At that time, Jiang Wei and his entourage led tens of thousands of troops to Xukan and rushed to Diduo.