送交者: pgss 于 2016-02-18, 23:50:05:

回答: In fact, the wall was first built in 852 A.D. to fend off Muslim attackers. 由 cornbug 于 2016-02-18, 21:07:15:

• No (无内容) - ASH (0 bytes) 2016-02-19, 08:54:04 (801362)

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