《资治通鉴·晋纪·晋纪三十二》
到了这一年，北魏才开始依照汉族的古代传统，制订了在祭庙、朝会使用的礼仪音乐。然而，只有每年初夏的祭祀天神的活动，拓跋才亲自参加献祭，其余几次，多是由有关部门负责执行。
至是，始依仿古制，定郊庙朝飨礼乐，然惟孟夏祀天亲行，其馀多有司摄事。
It was not until this year that the Northern Wei began to formulate ritual music for use in temple sacrifices and court meetings, following the ancient traditions of the Han people. However, only during the annual early summer sacrifices to the gods did Tuoba Wei personally participate in the sacrifices, while on the remaining occasions, they were mostly carried out by the relevant departments.