Pratas Island, also known as the Tungsha Islands or the Dongsha Islands, is a coral island situated in the northern part of the South China Sea administered as part of Cijin District, Kaohsiung, Taiwan. It is located about 170 nautical miles southeast of Hong Kong. It has an area of about 240 hectares, including 64 hectares of lagoon, and is the largest of the South China Sea Islands. It is the location of the Dongsha Airport.

Dongyin Township (Tungyin) is an insular rural township which is part of Lienchiang County, Fujian Province, Republic of China (Taiwan). The islands are in the East China Sea off the coast of Fujian Province, China near the cities of Fuzhou (Foochow) and Ningde. The township is known for its natural environment and Eastern Min culture, for the historical Dongyong Lighthouse and for its military importance and history as the northernmost territory of Taiwan.