At the center of the Asia Pacific economic circle, Hainan Island, part of the southernmost province of China, is not only the largest special economic zone in the country but also a key link on the 21st Century Maritime Silk Road, with ready access to international shipping routes of the South China Sea. It covers a land area of 35,400 square kilometers and administers neighboring Xisha, Nansha and Zhongsha islands, as well as their waters.