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Qing Dynasty Korean peninsula Dragon Vein Changbai Mountain Four counties and cities Between islands
01-14
![Although the Qing Dynasty, which was far away, in order to protect its own dragon vein, forcibly reclaimed the territory of these four counties[fig]](data:image/gif;base64,R0lGODlhAQABAIAAAP///wAAACwAAAAAAQABAAACAkQBADs=)