《汉书·传·冯奉世传》
国家遭受饥荒，战士、马匹瘦弱，数量也不多，战争用的装备长期废置不修，夷狄各族都有轻视边疆官吏的心思，所以羌族才会首先发难。
天下被饥馑，士马羸秏，守战之备久废不简，夷狄皆有轻边吏之心，而羌首难。
The country is suffering from famine, the soldiers and horses are thin and weak, and the number is not large. The equipment used in the war has been abandoned for a long time. The barbarians all have the idea of despising the frontier officials, so the Qiang people attacked first.