《汉书·志·五行志下之下》
武帝建元六年六月，有彗星出现在北方。
武帝建元六年六月，有星孛于北方。
In the sixth month of the sixth year of Emperor Wu's Jian Yuan reign, a comet appeared in the north.
<s>[INST] Convert the following modern Chinese text into Classical Chinese: 武帝建元六年六月，有彗星出现在北方。 [/INST] 武帝建元六年六月，有星孛于北方。</s>
Convert the following modern Chinese text into Classical Chinese: 武帝建元六年六月，有彗星出现在北方。
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武帝建元六年六月，有星孛于北方。
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