《智囊(选录)·兵智部·狄青》
狄青说： 蕃人善于射箭，能吃苦耐劳，上高山下险坡，如在平地行走，只要趁着当地瘴气没有起来的时候，快马驰冲突击，必定能够破敌。 
青曰： 蕃部善射，耐艰苦，上下山如平地，当瘴未发时，疾驰破之，必胜之道也。 
Di Qing said: "Barbarians are good at archery, can endure hardships and persevere, they can climb mountains and descend slopes as easily as they would walk on flat ground, as long as we take advantage of the time before the local miasma appears, and attack with a rapid cavalry charge, we will be sure to defeat the enemy."