Under the command of Zeng Guofan, the victorious Xiang Army defeated the Taiping rebel army in a hard-fought battle at Tianjing (present-day Nanjing) in July 1864. Zeng was rewarded with the title of "Marquess Yiyong, First Class", while his brother Zeng Guoquan, along with Li Hongzhang, Zuo Zongtang and other Han Chinese officers who fought against the Taiping rebels, were rewarded with auspicious decorations and titles. With the Taiping rebel threat receding, Cixi focused her attention on new internal threats to her power. Of special concern was the position of Prince Gong, who was Prince-Regent in the imperial court. Prince Gong had gathered the support of all outstanding Han Chinese armies under his command. In addition, he controlled daily court affairs as the head of the Grand Council and the Zongli Yamen (the "de facto" foreign affairs ministry). With his increasing stature, Prince Gong was considered a threat to Cixi and her power.