《北史·列传·卷五十七》
元颢入据路阳，孝庄帝被迫北上太行山躲避。
元颢入洛，孝庄北度太行。
Yuan Hao entered Luoyang, and Emperor Xiaozhuang was forced to flee to the Taihang Mountains.
<s>[INST] Kindly elucidate the central themes in this passage in English: 元颢入洛，孝庄北度太行。 [/INST] Yuan Hao entered Luoyang, and Emperor Xiaozhuang was forced to flee to the Taihang Mountains.</s>
Kindly elucidate the central themes in this passage in English: 元颢入洛，孝庄北度太行。
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Yuan Hao entered Luoyang, and Emperor Xiaozhuang was forced to flee to the Taihang Mountains.
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