《宋书·志·卷十五》
他让自己的儿子新都侯王宇守丧三年，到了元后逝世时，王莽便亲自奉行守丧三年的礼制。
而令子新都侯宇服丧三年。及元后崩，莽乃自服三年之礼。
He ordered his son, the Marquis of Xin Du, Wang Yu, to mourn for three years. When Empress Yuan died, Wang Mang personally followed the mourning ceremony for three years.
<s>[INST] Identify the key themes in this Classical Chinese text and explain them in English: 而令子新都侯宇服丧三年。及元后崩，莽乃自服三年之礼。 [/INST] He ordered his son, the Marquis of Xin Du, Wang Yu, to mourn for three years. When Empress Yuan died, Wang Mang personally followed the mourning ceremony for three years.</s>
Identify the key themes in this Classical Chinese text and explain them in English: 而令子新都侯宇服丧三年。及元后崩，莽乃自服三年之礼。
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He ordered his son, the Marquis of Xin Du, Wang Yu, to mourn for three years. When Empress Yuan died, Wang Mang personally followed the mourning ceremony for three years.
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