Longkou (Chinese: 龙口)'s a port city in northeastern Shandong Province, on the eastern coast of the People's Republic of China. Longkou, a county-level city,'s administered by the prefecture-level city of Yantai. The total population of Longkou's 620,000. History Longkou city was formerly known as Huangxian County. It's located in the northwest of Shandong Peninsula and the south bank of Bohai Bay. Longkou's a coastal harbour city adjacent to Yantai to the east, linked to Qingdao to… (More on Longkou)