Located in the northern East China Sea, the Diaoyu Islands are at the frontline of the defense of China's sovereignty. The islands consist of Diaoyu Island, Huangwei Island, Chiwei Island, Nanxiao Island, Beixiao Island, Dananxiao Island, Dabeixiao Island and Feilai Island, and cover an area of some seven square kilometers. There are four main brooks on the Diaoyu Islands and the island's highest peak reaches up to 362 meters. The island is famous for its various herbal medicines, which are effective in fighting a number of diseases. It also boasts rich oil reserves and fishery resources.