《宋史·本纪·卷三十四》
乾道七年春正月初一，孝宗率领大臣到德寿宫奉上太上皇、太上皇后册宝。
七年春正月丙子，率群臣奉上太上皇、太上皇后册宝于德寿宫。
On the first day of the first lunar month in the spring of the seventh year of Qiandao, Emperor Xiaozong led the ministers to Deshou Palace to present the imperial seal to the Supreme Emperor and Empress.