《北史·列传·卷一》
当魏明帝继位后，尊封胡氏为皇太妃，后又尊称皇太后。
及明帝践阼，尊后为皇太妃，后尊为皇太后。
When Wei Mingdi succeeded to the throne, Hu Shi was honored as the imperial concubine, and later as the empress dowager.
<s>[INST] Convert the following English text into Classical Chinese: When Wei Mingdi succeeded to the throne, Hu Shi was honored as the imperial concubine, and later as the empress dowager. [/INST] 及明帝践阼，尊后为皇太妃，后尊为皇太后。</s>
Convert the following English text into Classical Chinese: When Wei Mingdi succeeded to the throne, Hu Shi was honored as the imperial concubine, and later as the empress dowager.
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及明帝践阼，尊后为皇太妃，后尊为皇太后。
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