Great overview Vincent, and nice cutting! I was wondering what type of cross section the Art of Fire and Iron was using when I saw the sabre on their product promos. They certainly chose a special example to represent the Yuan sabre; I suspect they originally based theirs on an antique with the following description 公元 14 世纪，长 90 厘米，双阴刃状伏连槛，北方蒙草绿，突出部像双尖，构造极侧边，刀身流畅，鱼鳞形长反刃. Thanks much for the showcase!
looks very similar to a chinese liuye dao (willow leaf saber) that came later in the Ming and Qing dynasties. you can definitely see the lineage of the mongol weapon forming the prototype for the later liuye dao, which also incorporates more native chinese design elements.
Liuye and yanmaodao are not related to mongol swords as slightly curved sword with broader tip like the yanmaodao used in Ming and Qing were native to China and alrdy being used in the Song dynasty before rise of mongols. Mongol sword were closely resembled Turkic saber of the previous century.
Well the Mongols and the Jurchens did adopt a Han Chinese Dynastic name so the are Chinese Dynasties, just not completely Han ruled Dynasties, they would have been considered non Chinese if they didn't adopt a Han nomenclature and instead used a country/state name from their origin, say Mongolian, and if they forced the Han Chinese to adopt their language, religion and customs almost completely like what the Ottoman Turks did to their Eastern Roman/Greek subjects in Turkiye.
