《资治通鉴·晋纪·晋纪三十七》
南燕贺赖卢、公孙五楼挖了一条地道出来袭击东晋部队，却不能把他们击退。
南燕贺赖卢、公孙五楼为地道出击晋兵，不能却。
He Lai Lu and Gongsun Wulou of Southern Yan dug a tunnel to attack the Eastern Jin troops, but they could not repel them.
<s>[INST] Identify the key themes in this Classical Chinese text and explain them in English: 南燕贺赖卢、公孙五楼为地道出击晋兵，不能却。 [/INST] He Lai Lu and Gongsun Wulou of Southern Yan dug a tunnel to attack the Eastern Jin troops, but they could not repel them.</s>
Identify the key themes in this Classical Chinese text and explain them in English: 南燕贺赖卢、公孙五楼为地道出击晋兵，不能却。
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He Lai Lu and Gongsun Wulou of Southern Yan dug a tunnel to attack the Eastern Jin troops, but they could not repel them.
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