"Mongolian origin legend" is through the mouth for thousands of years legend has it that Genghis Khan established the Mongol Empire, the creation of Uighur Mongolian, the text before recording began.

“蒙古族起源传说”就是历经千百年的口承相传，到成吉思汗建立蒙古帝国，创造回鹘蒙古文之后，才始于文字记述。

youdao

Return to Atlantis, named after the empire that completely disappeared - the legend of Atlantis.

重归亚特兰蒂斯，得名于广为流传的消失的帝国——亚特兰蒂斯的传说。

youdao

The Mongols, while indeed being the fierce horsemen of legend, did, having established their empire which stretched from Northern China to Western Europe, then rule it as a free trade area.

FORBES: In Which We Gently Correct James Taylor