Nanchong was in the territory of the state of Ba before it was conquered by the Qin dynasty in 314 BC. The Qin set up a government at Langzhong city. Anhan city was established in Shunqinq district at the beginning of the Han Dynasty. The name of Anhan city was changed to Guozhou (fruit city) in 621 AD (Tang dynasty), and then to Nanchong in 742 AD.