《旧唐书·本纪·卷十五》
闰五月初十，任命尚书左丞许孟容为东都留守，充任都畿防御使。
己亥，以尚书左丞许孟容为东都留守，充都畿防御使。
On May 10 in the intercalary month, Xu Mengrong, the left head of the Ministry of the State, was appointed as the defender of the eastern capital and also as the defense envoy of the capital area.
<s>[INST] Analyze the following Classical Chinese passage and provide both a modern Chinese and an English translation: 己亥，以尚书左丞许孟容为东都留守，充都畿防御使。 [/INST] Modern Chinese Interpretation: 闰五月初十，任命尚书左丞许孟容为东都留守，充任都畿防御使。 English Translation: On May 10 in the intercalary month, Xu Mengrong, the left head of the Ministry of the State, was appointed as the defender of the eastern capital and also as the defense envoy of the capital area.</s>
Analyze the following Classical Chinese passage and provide both a modern Chinese and an English translation: 己亥，以尚书左丞许孟容为东都留守，充都畿防御使。
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Modern Chinese Interpretation: 闰五月初十，任命尚书左丞许孟容为东都留守，充任都畿防御使。 English Translation: On May 10 in the intercalary month, Xu Mengrong, the left head of the Ministry of the State, was appointed as the defender of the eastern capital and also as the defense envoy of the capital area.
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