《资治通鉴·魏纪·魏纪三》
于是，天水、南安、安定等郡都背叛魏而响应诸葛亮，关中如雷轰顶，受到震动，朝廷大臣不知不什么对策，明帝说： 诸葛亮本来依据山险固守，现在亲自前来，正合乎兵书所说招敌前来的策略，一定能够打败诸葛亮。 
于是天水、南安、安定皆叛应亮，关中响震，朝臣未知计所出。帝曰： 亮阻山为固，今者自来，正合兵书致人之术，破亮必也。 
As a result, the districts of Tianshui, Nan'an, and Anding renounced their allegiance to Wei and went over to Zhuge Liang. Guanzhong was shaken to its core, and the imperial ministers were at their wits' end. The Wei emperor said, ‘Zhuge Liang based his defense on the mountains and was hard to dislodge. Now he has come out personally, which accords with the military maxim of luring the enemy in. We can certainly defeat Zhuge Liang.’