《元史·本纪·卷十六》
十八日，荧惑星干犯房宿天区。
己丑，荧惑犯房。
On the 18th day, the planet Mars encroached upon the sky of the Fang constellation.
<s>[INST] Render the following Classical Chinese text into fluent English: 己丑，荧惑犯房。 [/INST] On the 18th day, the planet Mars encroached upon the sky of the Fang constellation.</s>
Render the following Classical Chinese text into fluent English: 己丑，荧惑犯房。
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On the 18th day, the planet Mars encroached upon the sky of the Fang constellation.
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