that this is the image of the Xianyun tribe that once posed a serious militarythreat to the northern border of the Zhou Dynasty. They were called "Ghost
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(页面存档备份,存于互联网档案馆). Popular Mechanics. 12 October 2020. Grady, John. Russia is Top MilitaryThreat to U.S. Homeland, Air Force General Says. USNI News. 2021-08-18 [2021-12-12]
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