Country/territory: China (mainland)
Central coordinates (latitude / longitude): 21°36'00"N (21.6000°) / 109°02'59"E (109.0500°)
Area (reported): 5,500 hectares / 55.00 km² / 13,591 acres / 21.24 square miles
Area (GIS-derived): 15,945 hectares / 159.45 km² / 39,401 acres / 61.56 square miles
Altitude: 0–12 m (0–39 ft)