Which nation do the Eight Banners represent?

Each flag of the Eight Banners does not represent a nation, and the Eight Banners system is a management system founded by Nurhachi. After he unified the ministries of Jurchen, he divided them according to the colors of the Eight Banners. Yellow, inlaid with yellow and white are the three flags above, that is, directly led by the royal family. The other five flags are led by designated confidants. If there are ethnic differences, the Mongolian Eight Banners and the Han Eight Banners were established later. Sanggelinqin is the Eight Banners of Mongolia, and Cao Xueqin is the Eight Banners of Han Dynasty.