In 208 AD, Sun Liu's allied troops defeated Cao Cao in Chibi, forming a pattern of tripartite confrontation among the three countries. Later, Sun Quan sent troops to raid Guan Yu and reoccupied Jingzhou, occupying a large territory in the middle reaches of the Yangtze River below Yiling. In 22 1 year, Sun Quan came to Fan Jiang County, Hubei Province from the Public Security Bureau to inspect the navy division, and gave a banquet in Fan Chuan to reward Soochow soldiers. After waking up, Sun Quan strolled through the Western Hills accompanied by Zhou Yu and Lu Su. Suddenly, he saw three golden phoenix flying on the Hutou Mountain and singing to them. He also heard that there was a yellow dragon lying on the rock in the middle of the river. Lu Su immediately hinted that this was a dragon plate. Sun Quan ordered the removal of thousands of wealthy tycoons from Jianye and the construction of Wuchang City on the bank of the Yangtze River at the foot of Xishan Mountain. In 229 AD, Sun Quan set up an altar in the south of the city and proclaimed himself emperor. He changed his country name to "Huanglong" and built a Phoenix Terrace in the east of the city to commemorate it. Later, Feng Ming Temple was built next to Phoenix Terrace. Since then, Wuchang has become the political, economic and cultural center along the Yangtze River. 19 13 changed its name to Shou Chang, and 19 14 restored its ancient name to Sun Yicheng county.