《元史·本纪·卷二十七》
二十一日，议定恭谢太庙仪式。
丙寅，定恭谢太庙仪式。
On the 21st day, the ritual for showing gratitude at Taimiao was discussed and decided.
<s>[INST] Identify the key themes in this Classical Chinese text and explain them in English: 丙寅，定恭谢太庙仪式。 [/INST] On the 21st day, the ritual for showing gratitude at Taimiao was discussed and decided.</s>
Identify the key themes in this Classical Chinese text and explain them in English: 丙寅，定恭谢太庙仪式。
user
On the 21st day, the ritual for showing gratitude at Taimiao was discussed and decided.
assistant