《水经注·卷六》
老城左右两边都是幽深的山涧，城南朝向一条大沟，俗称狼马涧。旧时截断山涧来筑城，有南门和北门，城门和老城墙还在。
左右夹涧幽深，南面大壑，俗谓之狼马涧，旧断涧为城，有南、北门，门闉故壁尚在。
To the left and right of the old city are deep mountain streams, and to the south of the city is a large trench, commonly known as the Wolf and Horse Stream. In the past, the mountain streams were intercepted to build the city, and there were south and north gates. The city gates and the old city walls are still there.
<s>[INST] Transpose the following Modern Chinese text into Classical Chinese: 老城左右两边都是幽深的山涧，城南朝向一条大沟，俗称狼马涧。旧时截断山涧来筑城，有南门和北门，城门和老城墙还在。 [/INST] 左右夹涧幽深，南面大壑，俗谓之狼马涧，旧断涧为城，有南、北门，门闉故壁尚在。</s>
Transpose the following Modern Chinese text into Classical Chinese: 老城左右两边都是幽深的山涧，城南朝向一条大沟，俗称狼马涧。旧时截断山涧来筑城，有南门和北门，城门和老城墙还在。
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左右夹涧幽深，南面大壑，俗谓之狼马涧，旧断涧为城，有南、北门，门闉故壁尚在。
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