《北史·列传·卷六十二》
这个时候国家多事，凡是兴师动众、京都留守和各藩镇互相交易，都命令御史监督。
于时军国多务，凡是兴师动众，京都留守，及与诸蕃互市，皆令御史监之。
At this time, there were many things in the country. Whenever a large-scale war was launched, the imperial capital stayed behind and the vassal towns traded with each other, and the emperor ordered the censors to supervise it.