A few hours away from Beijing is Nandaihe, a scenic seaside for you to get away from the city

Connected to Beidaihe by a bridge over a river, Nandaihe is the newly developed tourist and recuperation resort under Funing County of Qinhuangdao City, Hebei Province. 

http://www.chinaculture.org/gb/en_travel/2004-04/28/content_46883.htm