《汉书·传·爰盎晁错传》
于是用刀决开军营的帐幕，引导袁盎从醉倒的士兵所把守的路上径直走出。
乃以刀决帐，道从醉卒直出。
So he used a knife to cut open the tent of the military camp and led Yuan Ang to walk directly out of the road guarded by the drunken soldiers.