 Several of its commanders believed that they would be punished, and they decided to carry out a coup, with Yuwen Shu's son Yuwen Huaji the Duke of Xu as their leader.The general Zhang Huishao (張惠紹) heard about the plot and reported it to Pei Yun, and Pei and Zhang planned to issue a false edict to have Yuwen Huaji arrested and then mobilize the troops against the coup leaders.They report to Yu, and Yu, believing that the report was false, refused to support the plan.