Trans-Karakoram Tract
China is a country located in East Asia with an area of . The exact land area can sometimes be challenged by border disputes, including those concerning Taiwan, Aksai Chin, the Trans-Karakoram Tract, the South China Sea Islands, the Senkaku Islands, and South Tibet. As sovereignty over Hong Kong and Macau were restored to China in 1997 and 1999, two special administrative regions were established under the One Country, Two Systems policy. The People's Republic of China is either the third or fourth largest country in the world, being either slightly larger or slightly smaller than the United States depending on how the area of the United States is measured.