《宋史·列传·卷一百二十六》
杨存中不敢渡江，只是临江固垒以防敌军。
存中不敢渡，独临江固垒以老之。
Yang did not dare cross the river, and only built fortifications along the river bank to defend against the enemy.
<s>[INST] Transpose the following Modern Chinese text into Classical Chinese: 杨存中不敢渡江，只是临江固垒以防敌军。 [/INST] 存中不敢渡，独临江固垒以老之。</s>
Transpose the following Modern Chinese text into Classical Chinese: 杨存中不敢渡江，只是临江固垒以防敌军。
user
存中不敢渡，独临江固垒以老之。
assistant