and Guan Ying among the generals present. The Han general Jin Xi defeated what remained of Zhang Ping's force and took control of Longxi Commandery, and the Han general Li Shang took control of the Beidi and Shangchun Commanderies in the north, defeating a Yong general at Yenchih, a force under Zhou Lei at Xunyi, and a force under Su Tsu at Niyang. The main Han army marched north-east to Gaonu, the capital of Zhai, where Dong Yi surrendered without a fight. Aftermath Although Feiqiu remained under siege, by September Guanzhong had become the administrative centre of Liu Bang's growing dominion, and in October he began expanding into the Central Plain, annexing the State of Henan in that month, the State of Han in November, and the States of Western Wei and Yin in March 205. In April he used Xiang Yu's assassination of King Huai II of Chu in October 206 to launch a full-scale war against Xiang Yu for control over China (see the Chu-Han Contention). That same month, in alliance with the State of Zhao, Liu Bang briefly seized Xiang's capital city, Pengcheng, while Xiang was still campaigning in Qi. By June Han Xin had taken command of the siege of Feiqiu, and he ordered Fan Kuai to dig a channel from the Wei River to divert water to the mudbrick walls of the city. This caused a section of the walls to soften and collapse after a few days, and as the Han troops entered the city, Zhang Han committed suicide. The three states of Qin thus became three prefectures. After Liu's victory in the Chu-Han contention, the Guanzhong region became the crown land of the newly established Han dynasty, with Chang'an being the imperial capital, located merely miles away from the former Qin capital of Xianyang on the opposite side of the Wei River. See also Timeline of the Chu–Han Contention Guanzhong References Qin dynasty Han dynasty 206 BC 205 BC Three Qins History of Shaanxi Last stands