《宋书·志·卷十七》
前左丞逐面认为： 置世祖宗坚塞、至遗、蕴担庙祠，都是晋帝的伯父，本朝明确规定，并没有让有关官员代为执爵奉祀的礼仪。
前左丞孙缅议： 晋世祖宗祠显宗、烈宗、肃祖，并是晋帝之伯，今朝明准，而初无有司行事之礼。
Former Zuo Cheng Zhu Mian believed: Shizu Zong, Jian Sai and Zhi Wei, Yun Dan Temple are all the uncles of Jin Emperor, and the imperial court has clearly stipulated that there is no etiquette for relevant officials to serve the sacrifice.
<s>[INST] Kindly elucidate the central themes in this passage in English: 前左丞孙缅议： 晋世祖宗祠显宗、烈宗、肃祖，并是晋帝之伯，今朝明准，而初无有司行事之礼。 [/INST] Former Zuo Cheng Zhu Mian believed: Shizu Zong, Jian Sai and Zhi Wei, Yun Dan Temple are all the uncles of Jin Emperor, and the imperial court has clearly stipulated that there is no etiquette for relevant officials to serve the sacrifice.</s>
Kindly elucidate the central themes in this passage in English: 前左丞孙缅议： 晋世祖宗祠显宗、烈宗、肃祖，并是晋帝之伯，今朝明准，而初无有司行事之礼。
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Former Zuo Cheng Zhu Mian believed: Shizu Zong, Jian Sai and Zhi Wei, Yun Dan Temple are all the uncles of Jin Emperor, and the imperial court has clearly stipulated that there is no etiquette for relevant officials to serve the sacrifice.
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