The Fifteen Odes of the States are songs and music from fifteen different regions, which can be divided into five major literary areas:
The Two Nan, located in Nanyang (southwestern Henan and northern Hubei today) and Nan Commandery (Jiangling, Hubei today). The land of the Two Nan was later annexed by the state of Chu, so some people refer to it as the source of "Chu Ci".