《周书·列传·卷二十八》
就据守在险要之处，想拖延日子来使贺若敦的军队疲弱。
乃据守要险，欲旷日以老敦师。
They defended the precipitous places, wanting to protract the time to weaken He Ruo Dun's army.
<s>[INST] Kindly elucidate the central themes in this passage in English: 乃据守要险，欲旷日以老敦师。 [/INST] They defended the precipitous places, wanting to protract the time to weaken He Ruo Dun's army.</s>
Kindly elucidate the central themes in this passage in English: 乃据守要险，欲旷日以老敦师。
user
They defended the precipitous places, wanting to protract the time to weaken He Ruo Dun's army.
assistant