Phosphorus Island is 3.3 square kilometers. It looks very big, but it is very small. Most of the time, it is submerged by sea water. Only one of the sand bars on the island is out of the sea. It can be said that it is the center of the island. Hengda Haihua Island can be seen along the coast from Yerong Beach, along the same longitude as Nanhua Village, Paipu Town.