Between Haikou and Gaizhou, which city is located further south of China?
Haikou Hǎikǒu (), is the capital and most populous city of Hainan province, China. It is situated on the northern coast of Hainan, by the mouth of the Nandu River. The northern part of the city is the district of Haidian Island, which is separated from the main part of Haikou by the Haidian River, a branch of the Nandu.
Dongkou County Dongkou County () is a county in the Province of Hunan, China, it is under the administration of Shaoyang City. Located in the midwestern Hunan, the county is bordered to the northeast by Longhui County, to the northwest by Xupu County and Hongjiang City, to the southwest by Suining County, to the southeast by Xinning County. Dongkou County covers 2,200 km2 , as of 2015, it had a registered population of 870,900 and a permanent resident population of 784,500. The county has 11 towns, 9 townships and 3 subdistricts under its jurisdiction, the county seat is Wenchang Subdistrict (文昌街道).