Wudi had typical East or Northeast Asian appearance from pigmentation SNPs and facial reconstruction. Pathogenic SNPs gave Wudi increased stroke susceptibility. Wudi closest genetically to ancient Khitan and Heishui Mohe samples. Wudi closest to modern Daur and Mongolian populations. Wudi showed extra affinity to Yellow River farmers. Wudi derived 61% ancestry from ancient Northeast Asians. Wudi derived nearly one-third ancestry from Yellow River farmer-related groups. Ancestry mix from continuous Xianbei royal-Han aristocrat intermarriage. Ancient Xianbei showed genetic diversity across regions. Xianbei formation involved dynamic admixture with surrounding populations.