It is located 4 kilometers southeast of Xiangzhou, Zhuhai, northwest of Jiuzhou Island and 550 meters west of Zhouzai Village on the mainland. It covers an area of 0.03 square kilometers. The island runs east-west, with a sharp head and a straight tail, and looks like a boat crossing the sea, so it is called Hengzhou. Later, because it was renamed together with another island, a hill on the island was used as the name of the island during the sea area survey in 1984. Granite structure, the surface layer is weathered fossils and sticky yellow sand with sparse thatch. The terrain is high in the east and low in the west, showing an east-west trend. There are Schleswig Bank and Locke Bank around. There are springs in the west bank, which are drinkable 10 people. There are two dry reefs on the northwest coast and one dry reef in the southwest.