《北史·列传·卷一》
当尔朱荣宣布领兵渡黄河时，胡太后把明帝六宫的宫妃宫女集合起来，下令让她们都皈依佛教，太后自己也削发为尼。
及尔硃荣称兵度河，太后尽召明帝六宫，皆令入道，太后亦自落发。
When Er Zhurong declared that he was leading troops to cross the Yellow River, Empress Dowager Hu gathered together the imperial concubines and palace maids of the six palaces of Emperor Ming, ordering them all to convert to Buddhism, and the empress dowager herself also shaved her hair and became a nun.
<s>[INST] Kindly elucidate the central themes in this passage in English: 及尔硃荣称兵度河，太后尽召明帝六宫，皆令入道，太后亦自落发。 [/INST] When Er Zhurong declared that he was leading troops to cross the Yellow River, Empress Dowager Hu gathered together the imperial concubines and palace maids of the six palaces of Emperor Ming, ordering them all to convert to Buddhism, and the empress dowager herself also shaved her hair and became a nun.</s>
Kindly elucidate the central themes in this passage in English: 及尔硃荣称兵度河，太后尽召明帝六宫，皆令入道，太后亦自落发。
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When Er Zhurong declared that he was leading troops to cross the Yellow River, Empress Dowager Hu gathered together the imperial concubines and palace maids of the six palaces of Emperor Ming, ordering them all to convert to Buddhism, and the empress dowager herself also shaved her hair and became a nun.
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