《辽史·本纪·卷六》
七年春正月十二日，鼻骨德前来进贡。
七年春正月庚子，鼻骨德来贡。
On the twelfth day of the first lunar month of spring in the seventh year, Bigede came to pay tribute.
<s>[INST] Identify the key themes in this Classical Chinese text and explain them in English: 七年春正月庚子，鼻骨德来贡。 [/INST] On the twelfth day of the first lunar month of spring in the seventh year, Bigede came to pay tribute.</s>
Identify the key themes in this Classical Chinese text and explain them in English: 七年春正月庚子，鼻骨德来贡。
user
On the twelfth day of the first lunar month of spring in the seventh year, Bigede came to pay tribute.
assistant