Song conquest of Southern Tang

In 975 AD the Song managed through force to subdue the state now known as Southern Tang, to distinguish it from the synonymously named Tang dynasty, of which the Southern Tang proclaimed itself to be successor, as part of a series of Song conquests to reunify China. == Battle on the Yangtze == On the river Yangtze near Nanking, the capital of the Southern Tang, a major naval battle took place in 975 between the Song empire and the Southern Tang.

Source: Wikipedia — Song conquest of Southern Tang (CC BY-SA 4.0)