《水经注·卷十七》
水又往西流，经蒲池郊，发源于东南方石鲁溪的石鲁水，往西北注入。
其水又西历蒲池郊，石鲁水出东南石鲁溪，西北注之。
The water flows westward again, passes the suburbs of Puch, and the Shilu water originating from the Shilu stream in the southeast flows into the northwest.
<s>[INST] Identify the key themes in this Classical Chinese text and explain them in English: 其水又西历蒲池郊，石鲁水出东南石鲁溪，西北注之。 [/INST] The water flows westward again, passes the suburbs of Puch, and the Shilu water originating from the Shilu stream in the southeast flows into the northwest.</s>
Identify the key themes in this Classical Chinese text and explain them in English: 其水又西历蒲池郊，石鲁水出东南石鲁溪，西北注之。
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The water flows westward again, passes the suburbs of Puch, and the Shilu water originating from the Shilu stream in the southeast flows into the northwest.
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