《水经注·卷二十一》
周承休县是旧时的子南国。
县，故子南国也。
Zhou Chengxiu County was the former son of the southern state.
<s>[INST] Identify the key themes in this Classical Chinese text and explain them in English: 县，故子南国也。 [/INST] Zhou Chengxiu County was the former son of the southern state.</s>
Identify the key themes in this Classical Chinese text and explain them in English: 县，故子南国也。
user
Zhou Chengxiu County was the former son of the southern state.
assistant