《资治通鉴·汉纪·汉纪五十五》
刘备率军攻掠汝、颖地区，自许都以南，官民都人心不安，曹操对此很忧虑。
刘备略汝、颍之间，自许以南，吏民不安，曹操患之。
Liu Bei led his army to plunder the Ru and Ying areas. From Xudu southward, officials and people alike were filled with anxiety and Cao Cao was very worried about it.