《北史·本记·卷一》
冬十月初十，扩大西宫，修建外墙，周围长二十里。
冬十月癸卯，广西宫，起外墙，周回二十里。
On the 10th of October in winter, the west palace was expanded, and the outer wall was built, with a circumference of 20 miles.
<s>[INST] 将以下英文转换为文言文: On the 10th of October in winter, the west palace was expanded, and the outer wall was built, with a circumference of 20 miles. [/INST] 冬十月癸卯，广西宫，起外墙，周回二十里。</s>
将以下英文转换为文言文: On the 10th of October in winter, the west palace was expanded, and the outer wall was built, with a circumference of 20 miles.
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冬十月癸卯，广西宫，起外墙，周回二十里。
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