《汉书·传·爰盎晁错传》
臣听说汉兴以来，胡人多次侵入边地，小规模侵入就获得小利，大规模侵入就有大利；高后时再侵入陇西，攻城抢劫邑镇，驱掠畜产；之后又侵入陇西，杀害官兵，大举抢掠。
臣闻汉兴以来，胡虏数入边地，小入则小利，大入则大利；高后时再入陇西，攻城屠邑，驱略畜产；其后复入陇西，杀吏卒，大寇盗。
I have heard that since the rise of the Han, the various Hu peoples have repeatedly invaded the border regions: during small-scale invasion, they gained limited benefits, while during large-scale invasions, they enjoyed great gains; during the time of the Empress, they again invaded Longxi, capturing cities and raiding towns, and plundering livestock; then later, they again invaded Longxi, killing government troops and committing widespread robbery.