《魏书·列传·卷三十八》
现在虽然气候日趋炎热，还是可以行军，兵贵神速，久停就会生变。
但征人淹久，逃亡者多，迭相扇动，莫有固志，器仗败毁，无一可用。
“Although the weather is getting hotter every day, it is still possible to march. It is vital to move quickly in war, because delaying for too long can lead to trouble.”