 From this point on, however, Yuwen Hu entrusted Yuwen Xian with great responsibilities, and he participated in most important decisions.Yuwen Hu often had Yuwen Xian serve as a liaison between himself and Emperor Wu, and Yuwen Xian spent much effort trying to reduce the building tension between the two.By 568, he officially became minister of the army, as well as deputy prime minister (i.e., deputy to Yuwen Hu).