《北史·本记·卷十二》
二十八日，皇帝回师。
庚午，上班师。
On the 28th day, the emperor returned to his師.
<s>[INST] Kindly elucidate the central themes in this passage in English: 庚午，上班师。 [/INST] On the 28th day, the emperor returned to his師.</s>
Kindly elucidate the central themes in this passage in English: 庚午，上班师。
user
On the 28th day, the emperor returned to his師.
assistant