- 問題詳情:AnewlydiscoveredancientChinesemapmayprovethatitwasaChinesenavigatorwhofirstdiscoveredAmerica.HemayhavemadethediscoveryseventyyearsbeforeColumbusdiscoveredtheNewWorld.Themap,whichhasgoneondisplayinBeijing,issaidtobeacopymadein1763ofamucholderm...
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