《元史·本纪·卷十四》
二十五日，太阴星干犯氐宿天区。
丁巳，太阴犯氐。
On the 25th, the Taiyin star committed offenses in the Ti Su celestial region.
<s>[INST] Identify the key themes in this Classical Chinese text and explain them in English: 丁巳，太阴犯氐。 [/INST] On the 25th, the Taiyin star committed offenses in the Ti Su celestial region.</s>
Identify the key themes in this Classical Chinese text and explain them in English: 丁巳，太阴犯氐。
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On the 25th, the Taiyin star committed offenses in the Ti Su celestial region.
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