《宋史·列传·卷一百二十六》
绍兴十二年，徽宗棺椁下葬永固陵，命令杨存中都护。
十二年，徽宗梓宫攒永固陵，命存中都护。
In the twelfth year of the Shaoxing era (1142), Emperor Huizong's coffin was buried in the Yonggu Mausoleum, and Yang Cunzhong was ordered to serve as Protector.