《宋史·本纪·卷十六》
冬十月初一，秉常派遣使臣上表，请求恢复进贡的职责，并表示要归还旧有的疆土。
冬十月癸酉朔，秉常遣使上表，请复修职贡，乞还旧疆。
On the first day of the tenth month of winter, Bingchang sent envoys to submit a memorial, requesting to restore the tribute duty, and expressing that he would return the old territory.