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former city, northeastern Chongqing shi (municipality), central China. It has been a district of Chongqing since the municipality was established in 1997. The district is an important port along the Yangtze River (Chang Jiang), being situated at the western end of the river's renowned Three Gorges region. Before Chongqing municipality was formally separated from Sichuan province, Wanxian constituted the eastern gateway to Sichuan, and it functioned as a collecting and distribution centre for goods between Sichuan and neighbouring Shaanxi and Hubei provinces.