有道理。朝代更替，發生在氣候變冷時段。但是，是不是氣候變冷，一定會導致朝代更替？作者似乎有意不說清。

來源: 郭大平於 2025-06-16 12:47:04 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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