《宋史·列传·卷二百三十三》
理宗去世，度宗又是贾似道所立，每次朝见皇帝都对他回拜，称他为 师臣 而不称他的名字，朝臣都称他为 周公 。
理宗崩，度宗又其所立，每朝必答拜，称之曰 师臣 而不名，朝臣皆称为 周公 。
Lizong passed away and Duzong was enthroned by Jia Sidao, who would bow in return every time he met the emperor and address him as "Teacher-subject" rather than by his name; all of the court officials referred to him as "Duke of Zhou".