周世宗
The Later Zhou dynasty invaded the Southern Tang domain in 956 and defeated them by 958. Li Jing was forced to become a vassal of emperor Chai Rong, cede all territory north of the Yangtze River, and relinquish his title of emperor. In 960 the Southern Tang became vassals of the newly established Song dynasty. After Emperor Taizu had defeated the Later Shu and the Southern Han, he ordered the conquest of Jiangnan, which was completed in 975.