4 1.7 km. Baidu map shows that Qinhuangdao and Changli County are 4 1.7 kilometers apart, and no high-speed train arrives. Drive for 48 minutes, via the airport expressway, to Xianghai Avenue. The specific driving route is: start from Qinhuangdao, turn right, enter the airport expressway and drive for 22.9 kilometers; Go straight, enter Xianghai Avenue and drive for 3.6 kilometers; Turn right, from Wufengshan South Road to Changli County, and drive for 230 meters.