Chinese Patrol Vessels Sailing In Contiguous Zone

ISHIGAKI, JAPAN - OCTOBER 24: In this aerial image, four China Marine Surveillance ships sail along with Japan Coast Guard Patrol ship (top right) in the Japanese contiguous zone, 27-kilometer Southeast of Uotsuri Island, one of the disputed Senkaku Islands on October 24, 2012 in Ishigaki, Okinawa, Japan. Chinese ships appears the zone almost everyday since Japanese government purchased the islets. (Photo by The Asahi Shimbun via Getty Images)