《旧唐书·本纪·卷十一》
十七日，诏令郭子仪等大阅兵以防备吐蕃。
乙酉，诏郭子仪等大阅兵师以备吐蕃。
On the 17th day, Guo Ziyi and others were ordered to have a grand military review in preparation of defense against Tubo.
<s>[INST] Translate the following passage from Classical Chinese to both modern Chinese and English, focusing on preserving the emotional tone in both translations: 乙酉，诏郭子仪等大阅兵师以备吐蕃。 [/INST] Modern Chinese: 十七日，诏令郭子仪等大阅兵以防备吐蕃。 English: On the 17th day, Guo Ziyi and others were ordered to have a grand military review in preparation of defense against Tubo.</s>
Translate the following passage from Classical Chinese to both modern Chinese and English, focusing on preserving the emotional tone in both translations: 乙酉，诏郭子仪等大阅兵师以备吐蕃。
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Modern Chinese: 十七日，诏令郭子仪等大阅兵以防备吐蕃。 English: On the 17th day, Guo Ziyi and others were ordered to have a grand military review in preparation of defense against Tubo.
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