不錯。幽雲十六州被契丹占了後，北方民族進入中原門戶從此打開。

來源: Glider 於 2011-04-11 21:16:37 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.