《资治通鉴·宋纪·宋纪一》
现在我们亟待要做的就是早早建东宫立太子，遴选贤明的公卿做太子的师傅，让您左右亲信的大臣作他的宾客和朋友；让太子在京师时主持朝政，出京时则统率军队安抚百姓，讨伐敌人。
今宜早建东宫。选贤公卿以为师傅，左右信臣以为宾友；入总万机，出抚戎政。
“What we need to do urgently now is to establish the Eastern Palace and appoint a crown prince as soon as possible, select賢明公卿 to be the crown prince's teachers, and let those ministers who are close to you be his guests and friends; let the crown prince preside over the government affairs in the capital, and when he leaves the capital, command the army to appease the people and讨伐 the enemy.” 