《旧唐书·列传·卷八十四》
邢州守将李洪、临氵名守将张亻丕，都固守没被攻破。
邢州将李洪、临洺将张伾，皆坚守不拔。
Li Hong, the defender of Xingzhou, and Zhang Zhenpi, the defender of Linming, both fought bravely and managed to hold off the invasion.
<s>[INST] Identify the key themes in this Classical Chinese text and explain them in English: 邢州将李洪、临洺将张伾，皆坚守不拔。 [/INST] Li Hong, the defender of Xingzhou, and Zhang Zhenpi, the defender of Linming, both fought bravely and managed to hold off the invasion.</s>
Identify the key themes in this Classical Chinese text and explain them in English: 邢州将李洪、临洺将张伾，皆坚守不拔。
user
Li Hong, the defender of Xingzhou, and Zhang Zhenpi, the defender of Linming, both fought bravely and managed to hold off the invasion.
assistant