Dengloujiao, Jiaowei Township, Xuwen County, is the southernmost part ofthe mainland of China. Its geographical coordinates are 20 degrees 13 minutesnorth latitude and 109 degrees 55 minutes east longitude. It wedges into theQiongzhou Strait about 3 kilometers from north to south, and faces ChengmaiCounty of Hainan Island in the south. It is the key point of the channel betweenBeibu Gulf and Qiongzhou Strait.
In 1887, Wanguo company built the navigation lighthouse in Dengloujiao,namely Dengloujiao lighthouse. The original tower was of iron frame structure,where the imperial powers such as France, Britain and Russia built their houses.Today, there are still Western style houses and walls. In 1942, in order toavoid the use of Japanese invaders, Xuwen County Government demolished thenavigation lighthouse. After liberation, the iron frame lighthouse with concretepier was rebuilt in 1953, with a height of 15 meters and a range of 12 nauticalmiles. In 1979, it was rebuilt as a circular tower with stone brick and cementstructure. In 1994, the provincial maritime administration invested in theconstruction of a ten story 36 meter high hexagonal lighthouse. This lighthouseis the landmark of the Chinese mainland at the south end.
Dengloujiao was once occupied by France and other imperialist countries,and left many relics. When Hainan Island was liberated, it was also the firstport for the people's Liberation Army to cross the Qiongzhou Strait. It hasgreat historical commemorative value and has been set up as a patrioticeducation base.