《资治通鉴·后周纪·后周纪五》
不久，北汉军队果然到来，众将请求迅速救援，杨廷璋说： 隰州城池坚固，守将杰出，不容易攻克。 
未几，北汉兵果至，诸将请速救之。廷璋曰： 隰州城坚将良，未易克也。 
Soon, the Northern Han army truly arrived. All generals asked for immediate help, so Yang Tingzhang said: Xizhou's walls are sturdy, and the commanding general is excellent. He will not be easily defeated.