爾朱兆
Later, after Erzhu Rong overthrew Emperor Xiaoming's mother Empress Dowager Hu, after she poisoned Emperor Xiaoming and made Emperor Xiaozhuang emperor, Erzhu Rong became the paramound general of the empire, and Erzhu Zhao became a major general under him. Emperor Xiaozhuang created him the Duke of Yingchuan. He participated in the campaign by Erzhu Rong's associate Yuan Tianmu (元天穆) against the rebel Xing Gao (邢杲) in 529, and subsequently, when Emperor Xiaozhuang was expelled from the capital Luoyang later that year by the competing claimant for the throne, Yuan Hao (who was supported by rival Liang Dynasty), Erzhu Zhao helped break the stalemate between Yuan Hao's troops and Erzhu Rong's troops by making a surprise attack against Yuan Hao's son Yuan Guanshou (元冠受), causing Yuan Hao's forces to collapse and Yuan Hao to flee, allowing Emperor Xiaozhuang to be restored. By 530, Erzhu Zhao was serving as the governor of Fen Province (汾州, roughly modern Linfen, Shanxi), near Erzhu Rong's headquarters at Jinyang (晉陽, in modern Taiyuan, Shanxi).