retained most of imperial powers.) During Gao Wei's reign In summer 567, Hulü Guang's father Hulü Jin died. Hulü Guang resigned his posts to observe the customary three-year mourning period for his father, but was soon recalled to his posts by Emperor Wucheng. He inherited his father's title of Prince of Xianyang and continued to serve as chieftain of the Shule, and was also created an additional title of Duke of Wude. Around the new year 569, Emperor Wucheng died, and thereafter power was largely in the hands of his favorite (and Empress Dowager Hu's lover) He Shikai. Around the new year 570, the Northern Zhou general Yuwen Xian put the Northern Qi city Yiyang (宜陽, in modern Luoyang, Henan) under siege, and in spring 570, Hulü was sent to resist, and he defeated Yuwen Xian. However, the stalemate near Yiyang persisted. Hulü decided to take the war to Northern Zhou elsewhere, and in winter 570, he moved north and built forts north of the Fen River (汾水, flowing through modern Linfen), taking the previously unguarded border territory into Northern Qi control. While his subsequent battles in the region against the Northern Zhou generals Yuwen Xian and Wei Xiaokuan were largely indecisive, the region continued to be held by Northern Qi. In summer 571, he moved south again and defeated the Northern Zhou forces sieging Yiyang. As he subsequently returned to the capital Yecheng, however, he received an order to demobilize his troops. As many soldiers had not received their rewards yet, he submitted a secret petition to Gao Wei, requesting the emperor to send imperial messengers to the army to honor the soldiers. Gao Wei did not act immediately, however, and the army approached Yecheng without receiving any words from the emperor. Gao Wei was displeased that Hulü Guang brought the army close to the capital, and he summoned Hulü to the palace before sending messengers to honor the soldiers and demobilizing them. Nevertheless, honoring Hulü for his victory, he created Hulü yet an additional title of Duke of Qinghe. Later in 571, Gao Wei's brother Gao Yan (note different character than Emperor Xiaozhao) the Prince of Langye, angry at the hold that He Shikai had on power, killed him, and further mobilized his troops to consider seizing power and killing Gao Wei's wet nurse Lu Lingxuan and her son Mu Tipo, who had also become powerful. Hulü, while