《资治通鉴·宋纪·宋纪十二》
乙亥，追尊沈太妃为宣太后，陵园称为崇宁。
乙亥，追尊沈太妃曰宣太后，陵曰崇宁。
Yi Hai, posthumously honored Concubine Shen as Empress Xuan, and the mausoleum was called Chongning.
<s>[INST] Identify the key themes in this Classical Chinese text and explain them in English: 乙亥，追尊沈太妃曰宣太后，陵曰崇宁。 [/INST] Yi Hai, posthumously honored Concubine Shen as Empress Xuan, and the mausoleum was called Chongning.</s>
Identify the key themes in this Classical Chinese text and explain them in English: 乙亥，追尊沈太妃曰宣太后，陵曰崇宁。
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Yi Hai, posthumously honored Concubine Shen as Empress Xuan, and the mausoleum was called Chongning.
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