《晋书·志·第十九章》
二十年五月癸卯，上虞下冰雹。
二十年五月癸卯，上虞雨雹。
In May of the twentieth year, the day of Gui Mao, it hailed in Shangyu.
<s>[INST] Identify the key themes in this Classical Chinese text and explain them in English: 二十年五月癸卯，上虞雨雹。 [/INST] In May of the twentieth year, the day of Gui Mao, it hailed in Shangyu.</s>
Identify the key themes in this Classical Chinese text and explain them in English: 二十年五月癸卯，上虞雨雹。
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In May of the twentieth year, the day of Gui Mao, it hailed in Shangyu.
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