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Duyun-Anshun Expressway is 276 kilometers long with a total investment of 43 billion yuan ($6.66 billion), making it the most expensive expressway in Southwest China's Guizhou province.

It has 25 highway interchanges and seven service zones, connecting Qiannan Bouyei and Miao autonomous prefecture, Qiandongnan Miao and Dong autonomous prefecture and Anshun city.

It also connects with the Xiamen-Chengdu Expressway, Lanzhou-Haikou Expressway, Shanghai-Kunming Expressway and Huaxi-Anshun Expressway, allowing Southwest China's major cities to have access to the Pearl River Delta area.

The expressway applied advanced technologies in design, environmental conservation, ecological restoration, construction and earthworks – becoming Guizhou's only project to be selected as one of China's 33 green expressway demonstration projects.

The operation of the expressway is understood to not only complete China's expressway network, but also turns Guizhou into a land route hub in Southwest China.

It reportedly connects Qingzhen's economic and technological development zone and the Guian Free Trade Zone with Huishui and Changshun's economic and technological development zones, boosting the high-speed development of city clusters in central Guizhou.

Duyun-Anshun Expressway, which is part of the national Duyun-Shangri-La Expressway, officially was opened to traffic on June 28.