《旧五代史·后晋·高祖纪六》
八日，将镇州改为恒州，威德军改为顺国军。
癸亥，改镇州为恆州，成德军为顺国军。
On the 8th, Zhenzhou was renamed Hengzhou and Weide Military was renamed Shunguo Military.
<s>[INST] Identify the key themes in this Classical Chinese text and explain them in English: 癸亥，改镇州为恆州，成德军为顺国军。 [/INST] On the 8th, Zhenzhou was renamed Hengzhou and Weide Military was renamed Shunguo Military.</s>
Identify the key themes in this Classical Chinese text and explain them in English: 癸亥，改镇州为恆州，成德军为顺国军。
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On the 8th, Zhenzhou was renamed Hengzhou and Weide Military was renamed Shunguo Military.
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