《史记·三十世家·楚世家》
十一年，齐王秦王各自称帝，一个月后，又把帝改为王。
十一年，齐秦各自称为帝；月余，复归帝为王。
In the eleventh year, the Qi king and the Qin king called themselves emperors respectively, and a month later, they changed it back to the king.
<s>[INST] Take each pair of old and new sentences and unite them into a single translation that captures the core meaning: Archaic: 十一年，齐秦各自称为帝；月余，复归帝为王。 Updated: 十一年，齐王秦王各自称帝，一个月后，又把帝改为王。 [/INST] In the eleventh year, the Qi king and the Qin king called themselves emperors respectively, and a month later, they changed it back to the king.</s>
Take each pair of old and new sentences and unite them into a single translation that captures the core meaning: Archaic: 十一年，齐秦各自称为帝；月余，复归帝为王。 Updated: 十一年，齐王秦王各自称帝，一个月后，又把帝改为王。
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In the eleventh year, the Qi king and the Qin king called themselves emperors respectively, and a month later, they changed it back to the king.
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