Haidian Island in Hainan Province Haikou City, the north, about 14 square kilometers, located in Hainan's mother river, the Nandu River into the sea, is a typical delta island, Haidian Island is the largest island in Haikou City, Hainan University and Haikou City Hospital on Haidian Island. Together with the neighboring Xinyi Island, Haidian Island forms the center of the Nandu River Delta, where the Nandu River is divided into three major waterways, injecting the Qiongzhou Strait from both sides and between the two islands. Haidian Island and a water separated Haikou city center seems to be connected, like broken, a clothes with water across the river. Three bridges (Century Bridge, People's Bridge, and Peace Bridge) connect Haidian Island with Haikou City's Binhai Avenue and Longdi Road, making Haidian Island a convenient and relatively independent area with the city center. Haidian Island covers an area of about 14 square kilometers and is slightly wide and irregularly ovulating. The island is flat, the water system is dense, and there are many lakes and ditches, which add a water town to the island. In addition to a large number of companies in Haidian Island, its different shapes of villas also add a lot to Haidian Island. Yanjiang 2nd Road, Yanjiang 3rd Road is also an important commercial street component of Haikou City. Due to the unique geographical location of Haidian Island, coupled with the Nandu River into the sea, its rich microorganisms make Haidian Island surrounded by rich fish resources. There are often sea fishing enthusiasts fishing here. Especially at the entrance of Nandu River, due to the beach, volcanic rocks, there are different fishes, because of the change of water flow here, the original roundabout bathing beach has been closed, so that fish are not disturbed, in this sea fishing lovers can sometimes catch different sea fish. Especially the two sections of the dam filled out by artificially, there are often large salmon caught. Small grouper, black fin, yellow feet, sand cones are often caught here, and sometimes large salmon are hooked. Someone has caught 20 pounds of salmon. Haidian Island because of its unique location, although in the seaside, the seaside is rare to have wild waves, no serious natural disasters such as tsunamis, typhoons are rarely visited. Compared to other tropical islands with severe weather conditions, this is a safe, quiet and gentle place.