About South Australia: Nan'ao County is located at the intersection of the seas of Fujian, Guangdong and Taiwan. It is the only island county in Guangdong Province. It consists of the main island Nanao Island and 22 nearby islands, with a total area of ​​130.91 square kilometers, of which the main island area is 128 square kilometers, the sea area is 4,600 square kilometers, and the total population is 72,449, which is known as the "Guangdong Pearl of Yuedong".