Huangyan Island (formerly known as Democracy Reef) is internationally known as Scarborough Shoal. It is the only island reef in zhongsha islands, China, located at 15 07' north latitude and 16 5438+07 5 1' east longitude, about 160 nautical miles from Zhongsha Atoll. The territorial sovereignty of Huangyan Island belongs to People's Republic of China (PRC), and its administrative jurisdiction belongs to zhongsha islands Office in the southwest of Hainan Province, China. To the east of Huangyan Island is the Deep Manila Trench, which is the natural geographical boundary between China zhongsha islands and Philippine Islands.

Huangyan Island is the only island in the zhongsha islands of South China Sea in China. About 126 nautical mile east of subic bay. Surrounded by an annular reef plate between half a meter and three meters from the water surface. The shape of the reef disk is an isosceles right triangle. At the southeast end of Yuehu Lake, there is a 400-meter-wide passage connected with the open sea. Medium-sized fishing boats and small boats can enter through this passage to engage in fishing activities or shelter from the wind. Huangyan Island is west of 120 degrees east longitude, south of 20 degrees north latitude and north of 10 degrees, just sandwiched between two parallel lines. It is 600 nautical miles from Guangzhou in the north and about 126 nautical miles from subic bay in the east. Huangyan Island is surrounded by an annular reef plate between half a meter and three meters from the water surface. The shape of the reef plate is an isosceles right triangle, and a lake with an area of 130 square kilometers and a water depth of 10-20 meters is formed inside.