《资治通鉴·汉纪·汉纪三十五》
闰四月戊申，赵公刘栩、齐公刘章、鲁公刘兴都晋封为王。
闰月，戊申，进赵、齐、鲁三公爵皆为王。
Fourth month, Wushen, Zhao Gong, Liu Xu, Qi Gong, Liu Zhang, and Lu Gong, Liu Xing, were all promoted to kings.
<s>[INST] Identify the key themes in this Classical Chinese text and explain them in English: 闰月，戊申，进赵、齐、鲁三公爵皆为王。 [/INST] Fourth month, Wushen, Zhao Gong, Liu Xu, Qi Gong, Liu Zhang, and Lu Gong, Liu Xing, were all promoted to kings.</s>
Identify the key themes in this Classical Chinese text and explain them in English: 闰月，戊申，进赵、齐、鲁三公爵皆为王。
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Fourth month, Wushen, Zhao Gong, Liu Xu, Qi Gong, Liu Zhang, and Lu Gong, Liu Xing, were all promoted to kings.
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