 Yuwen Hu agreed, and Yuwen Xian subsequently won some minor battles against Hulü, eventually causing the armies to again stalemate, although by that point territory had been lost.In 572, Emperor Wu, apprehensive of Yuwen Hu, conspired with his brother by the same mother, Yuwen Zhi (宇文直) the Duke of Wei, and they ambushed and killed Yuwen Hu.After Yuwen Hu's death was announced, Yuwen Xian personally met Emperor Wu to apologize for having served under Yuwen Hu.