 While Yuwen Xian made some gains on another front, he abandoned the gains and retreated with Emperor Wu.In winter 576, Emperor Wu again attacked Northern Qi, with Yuwen Xian as one of his major generals.The attack, while initially repelled by Northern Qi, was very successful, and Yuwen Xian greatly contributed to the eventual seizure, around new year 577, of Northern Qi's secondary capital Jinyang (晉陽, in modern Taiyuan, Shanxi).