Sanming Datian Shipai Expressway exit was built in April, 202 1. According to relevant public information, the local government plans to start the construction of Sanming Datian Shipai Expressway during the "Tenth Five-Year Plan" period, and complete the finishing work of the remaining sections, which was completed in April 20021year. Datian county, also known as Yancheng, is a county under the jurisdiction of Sanming City, Fujian Province. It is located in the middle of Fujian Province, on the west side of Daiyun Mountain Range, bordering Dehua in the east, Yong 'an City, a county-level city with the most developed inland economy in Fujian in the west, Yongchun and Zhangping in the south and Sanming, Shaxian and Youxi in the north.