《明史·志·卷六十七》
于是增加赤城等城堡和烽火台二十二个。
乃增赤城等堡烟墩二十二。
Therefore, 22 castles and watchtowers were added, including Chi Cheng.
<s>[INST] Kindly elucidate the central themes in this passage in English: 乃增赤城等堡烟墩二十二。 [/INST] Therefore, 22 castles and watchtowers were added, including Chi Cheng.</s>
Kindly elucidate the central themes in this passage in English: 乃增赤城等堡烟墩二十二。
user
Therefore, 22 castles and watchtowers were added, including Chi Cheng.
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