每次天災草原大旱，牲畜羊群大減，北方遊牧民族就大舉入侵中原搶劫財富殺人放火，戰端立起。

來源: 老生常談12 於 2025-06-16 16:58:16 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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