Changli county. According to the Baidu map, Changli Huanhai Highway is located in the coastal expressway of Changli County, Qinhuangdao City, Hebei Province. The starting point of the highway around the sea is located in the North Outer Ring Road of Qinhuangdao City, and the end point is Shishankou Town of Beidaihe District, with a total length of about 3 kilometers. It is an important transportation hub in coastal tourist areas with beautiful scenery.