When the Jurchens were reorganized by Nurhaci into the Eight Banners, many Manchu clans were artificially created as a group of unrelated people founded a new Manchu clan (Manchu: "mukūn") using a geographic origin name such as a toponym for their "hala" (clan name). The irregularities over Jurchen and Manchu clan origin led the Qing to document and systematize the creation of histories for Manchu clans, including manufacturing an entire legend around the origin of the Aisin Gioro clan by taking mythology from the northeast.