Tong'an is also called the "Silver City". It became a county in the third year (282 A.D.) of the Taikang Period of the Western Jin Dynasty and has a history of over 1,700 years. It is located on the southeastern coast of Fujian and north of Xiamen, at the center of the Minnan "Golden Triangle" and opposite to Taiwan across the ocean. As the largest administrative district of Xiamen, it has a coverage area of 669 sqkm and a permanent population of  0.892 million.

From:investxiamen.org.cn