The Pu 'an exit of Miancang Expressway is located in Pu 'an Township, Cangxi County, Guangyuan City, Sichuan Province. Miancang Expressway is a highway connecting Mianyang and Cangxi, and it is also one of the important exit passages in the layout planning of expressway network in Sichuan Province. It connects Mianyang, Nanchong, Bazhong, Hanzhong, Longnan and other places, and is an important road passage to countries and regions along the Belt and Road Initiative.