Lei Yixun, editor-in-chief of Hunan map publishing house shows a vertical atlas of China which is newly-issued by the publishing house in Changsha, capital of central China's Hunan Province, on June 23, 2014. Islands in South China Sea share the same scale with mainland and are better shown. [Photo/Xinhua]
A helicopter of a formation of the Nanhai Fleet of China's Navy flies above Nansha islands in the South China Sea on Jan 25, 2014. [Photo/Xinhua]
A formation of the Nanhai Fleet of China's Navy patrols Nansha islands in the South China Sea on Jan 24, 2014.[Photo/Xinhua]
Photo taken on May 15, 2013 shows a manta ray beside Triton Island which is part of the Xisha Island in South China Sea. [Photo/Xinhua]
Photo taken on May 20, 2013 shows the scenery of Pattle Island which is part of the Xisha Island in South China Sea. [Photo/Xinhua]
