Gangjeong Village where Jeju's naval base was built, it has been so beautiful and prosperous that it was called Jeju Island's 'Jeil Gangjeong'. The relationship among Dongseonyeok Jip and U-alnyonk-Jip(It means neighborhood in Jeju dialect), Gapjang (It means same age friends), Guendang(It means kin) and relatives, alumni and older alumni or junior become estranged. Now, Gangjeong Village is in its biggest crisis since it was founded. Gangjeong is a national treasure protection zone designated as natural monument No.442, designated as a UNESCO Biosphere Reserve area, The nearby area is designated as the Marine Conservation Zone designated by the Ministry of Maritime Affairs and Fisheries and Jeju Provincial Marine Park, and Gurumbi is ecologically excellent, designated as the absolute conservation zone and the absolute conservation coast of Jeju Island. So, it was designated as a fishing village experience town in 2004 and a superior natural ecology town in 2006. However, in 2007, the village president and several others ignored the procedures and decided to run the village as a candidate for the naval base. The navy and then the governor of Jeju Island accepted the decision and chose it as the site for the naval base. In February 2016, Jeju naval base was completed despite protests from residents of Gangjeong Village, numerous residents of the island, and the public. Gangjeong Village was chosen as the site of a naval base in April 2007 when 87 among 1,200 voters decided to attend an extraordinary general meeting. In response, a counterproposal committee was set up in the village, and on August 10, 2007, the former village president who led the bid for the naval base was dismissed at an extraordinary general assembly, and a new village president was elected. And on August 20 of that year, 94 percent of the absolute majority at the town assembly with 725 members opposed the construction of a naval base.