Country/territory: China (mainland)
Central coordinates (latitude / longitude): 39°32'59"N (39.5500°) / 123°00'00"E (123.0000°)
Area (reported): 4,000 hectares / 40.00 km² / 9,884 acres / 15.44 square miles
Area (GIS-derived): 3,173 hectares / 31.73 km² / 7,841 acres / 12.25 square miles
Altitude: 0–50 m (0–164 ft)