《宋史·本纪·卷三十三》
二十二日，下诏因太上皇不许五日一朝，从今以后改为一月四朝。
丁亥，诏以太上皇不许五日一朝，自今月四朝。
On the 22nd day, an edict was issued saying that the emperor emeritus had not allowed a visit every five days, so it would be changed to four visits per month.