《旧唐书·列传·卷八十三》
次日召集将领，商量军队进攻方向，众将说： 先攻外城，占有街市，然后北攻宫殿。 
晨集将佐，图兵所向，诸将曰： 先拔外城，既有市里，然后北清宫阙。 
The next day, he summoned his generals and discussed from which direction the army should attack. They said: "First attack the outer city, occupy the market, and then head north to attack the palace."