Hengqin Island Hengqin Island (Hengqin Island) is the largest island in Zhuhai City, Hengqin Town, Xiangzhou District, Zhuhai City, Guangdong Province, China, adjacent to Macau to the east. Hengqin Island is8.6 kilometers north and south, 7 kilometers east and west, and 76 kilometers of the island's shoreline. After all development, it will reach 106.46 square kilometers. It is the largest of Zhuhai's 146 islands and three times the existing area of Macau.