《北史·列传·卷四十一》
当时窦泰与宇文泰交战失利，高欢率军撤退。薛孤延断后，且战且退，一天砍断了十五把刀。
及窦泰失利，神武班师，延后殿，且战且行，一日斫折十五刀。
At that time, Dou Tai had lost the battle with Yuwen Tai. Gao Huan led the army to retreat. Xue Guyin stayed behind to cover their retreat and fought while retreating, cutting off fifteen swords in one day.
<s>[INST] Render the following Classical Chinese text into fluent English: 及窦泰失利，神武班师，延后殿，且战且行，一日斫折十五刀。 [/INST] At that time, Dou Tai had lost the battle with Yuwen Tai. Gao Huan led the army to retreat. Xue Guyin stayed behind to cover their retreat and fought while retreating, cutting off fifteen swords in one day.</s>
Render the following Classical Chinese text into fluent English: 及窦泰失利，神武班师，延后殿，且战且行，一日斫折十五刀。
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At that time, Dou Tai had lost the battle with Yuwen Tai. Gao Huan led the army to retreat. Xue Guyin stayed behind to cover their retreat and fought while retreating, cutting off fifteen swords in one day.
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