《资治通鉴·隋纪·隋纪四》
壬辰，炀帝改州为郡；改度、量、衡，全部依照古式。
壬辰，改州为郡；改度量权衡，并依古式。
Renchen, Emperor Yang changed the prefecture to the county; changed the degree, volume, and weight, all according to the ancient style.
<s>[INST] Kindly elucidate the central themes in this passage in English: 壬辰，改州为郡；改度量权衡，并依古式。 [/INST] Renchen, Emperor Yang changed the prefecture to the county; changed the degree, volume, and weight, all according to the ancient style.</s>
Kindly elucidate the central themes in this passage in English: 壬辰，改州为郡；改度量权衡，并依古式。
user
Renchen, Emperor Yang changed the prefecture to the county; changed the degree, volume, and weight, all according to the ancient style.
assistant