《元史·本纪·卷十六》
十二日，把奉先县改为房山县。
丙戌，改奉先县为房山县。
On the twelfth day, Fengxian County was changed to Fangshan County.
<s>[INST] Give the modern Chinese and English translation for the following Classical Chinese passage: 丙戌，改奉先县为房山县。 [/INST] Modern Chinese: 十二日，把奉先县改为房山县。 English: On the twelfth day, Fengxian County was changed to Fangshan County.</s>
Give the modern Chinese and English translation for the following Classical Chinese passage: 丙戌，改奉先县为房山县。
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Modern Chinese: 十二日，把奉先县改为房山县。 English: On the twelfth day, Fengxian County was changed to Fangshan County.
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