《三国志·魏书·徐胡二王传》
我军应该迅速进军据守南顿，南顿又很大的粮仓，估计能足够大军四十天的食用。
军宜速进据南顿，南顿有大邸阁，计足军人四十日粮。
Our army should quickly advance and guard Nanton. Nanton has a large granary. It is estimated that the food supply can provide for the whole army for forty days.