宇文护
in fall 556, while Yuwen Tai was on a tour of the norther provinces, he became ill at Qiantun Mountain (牽屯山, in modern Guyuan, Ningxia). He summoned his nephew Yuwen Hu to Qiantun and entrusted the affairs of the state as well as his sons to Yuwen Hu. He soon died, and Yuwen Jue took over his titles, while Yuwen Hu took the reins of the state, and under Yuwen Hu's tutelage, Yuwen Jue soon took the throne from Emperor Gong, ending Western Wei and establishing Northern Zhou.