 Yuwen suggested entering an alliance with the powerful official Yang Su—and forming the relationship with Yang Su through Yang Su's brother and confidant Yang Yue (楊約).Yang Guang therefore gave Yuwen much treasure and had him go to the capital Chang'an to try to meet Yang Yue.Yuwen offered some of the treasures pillaged from Chen to Yang Yue, and then also intentionally lost to Yang Yue when the gambled.