《资治通鉴·唐纪·唐纪十八》
秋季，八月乙未，吐蕃侵扰叠州。
秋，八月，乙未，吐蕃寇叠州。
In Autumn, in August, on Yiwei day, Tubo invaded Die State.
<s>[INST] Identify the key themes in this Classical Chinese text and explain them in English: 秋，八月，乙未，吐蕃寇叠州。 [/INST] In Autumn, in August, on Yiwei day, Tubo invaded Die State.</s>
Identify the key themes in this Classical Chinese text and explain them in English: 秋，八月，乙未，吐蕃寇叠州。
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In Autumn, in August, on Yiwei day, Tubo invaded Die State.
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