Hulü Guang
Later in 570, Wei's title was promoted to Duke of Xun. That winter, as forewarned by Wei, the Northern Qi general Hulü Guang encroached on Northern Zhou territory north of the Fen River and built forts there, seizing substantial territory. Wei personally met Hulü on the border to try to dissuade him from the campaign, but Hulü did not relent. The armies stalemated after Yuwen Hu sent reinforcements commanded by Emperor Wu's brother Yuwen Xian the Duke of Qi, but territory was already lost.