《明史·本纪·卷四》
十八日，魏国公徐辉祖率师增援山东，燕兵攻陷沛县，知县颜伯玮、主簿唐子清、典史黄谦死。
甲申，魏国公徐辉祖帅师援山东。燕兵陷沛县，知县颜伯玮、主簿唐子清、典史黄谦死之。
On the 18th day, Duke Wei Guogong Xu Huizu led his army to reinforce Shandong. The Yan soldiers captured Peixian. The county governor Yan Baiwei, the chief clerk Tang Ziqing, and the county historian Huang Qian died.
<s>[INST] Identify the key themes in this Classical Chinese text and explain them in English: 甲申，魏国公徐辉祖帅师援山东。燕兵陷沛县，知县颜伯玮、主簿唐子清、典史黄谦死之。 [/INST] On the 18th day, Duke Wei Guogong Xu Huizu led his army to reinforce Shandong. The Yan soldiers captured Peixian. The county governor Yan Baiwei, the chief clerk Tang Ziqing, and the county historian Huang Qian died.</s>
Identify the key themes in this Classical Chinese text and explain them in English: 甲申，魏国公徐辉祖帅师援山东。燕兵陷沛县，知县颜伯玮、主簿唐子清、典史黄谦死之。
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On the 18th day, Duke Wei Guogong Xu Huizu led his army to reinforce Shandong. The Yan soldiers captured Peixian. The county governor Yan Baiwei, the chief clerk Tang Ziqing, and the county historian Huang Qian died.
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