Tong'an District (simplified Chinese: 同安区; traditional Chinese: 同安區; pinyin: Tóng'ān Qū; Pe̍h-ōe-jī: Tâng-oaⁿ-khu) is a northern mainland district of Xiamen which faces Quemoy County, Republic of China. To the north is Anxi and Nan'an, and to the south is Jimei. Tong'an is also east of Lianxiang and Changqin to the West. It covers 657.59 square kilometres (253.90 sq mi)
Tong'an District has a population of 855,920 residents. (2020 Census).
The Penghu (/ˈpʌŋˈhuː/ PUNG-HOO, Hokkien POJ: Phîⁿ-ô͘ or Phêⁿ-ô͘ ) or Pescadores Islands are an archipelago of 90 islands and islets in the Taiwan Strait, about 50 kilometres (25 nautical miles) west of the main island of Taiwan across the Penghu Channel, covering an area of 141 km (54 sq mi). The archipelago collectively forms Penghu County. The largest city is Magong, on the largest island, which is also named Magong.
The Penghu islands first appear in the historical record in the Tang dynasty and were inhabited by Chinese people under the Southern Song dynasty, during which they were attached to Jinjiang County of Fujian. The archipelago was formally incorporated as an administrative unit of China in 1281 under Tong'an County of Jiangzhe Province in the Yuan dynasty. It continued to be controlled by Imperial China with brief European occupations by the Dutch Empire (1622–1624) and Second French colonial empire (1885), until it was ceded to the Empire of Japan in 1895. Japan’s surrender in 1945 ended its colonial rule over the Islands, which has since then been governed by the Republic of China (ROC). Under the terms of the Sino-American Mutual Defense Treaty and the subsequent Taiwan Relations Act between the ROC and the United States, Penghu is defined and geographically acknowledged as part of Taiwan.
Xiamen, historically romanized as Amoy, is a sub-provincial city in southeastern Fujian, People's Republic of China, beside the Taiwan Strait. It is divided into six districts: Huli, Siming, Jimei, Tong'an, Haicang, and Xiang'an. All together, these cover an area of 1,700.61 square kilometers (656.61 sq mi) with a population of 5,163,970 as of 2020 and estimated at 5.35 million as of 31 December 2024. The urbanized area of the city has spread from its original island to include most parts of all six of its districts, as well as 4 Zhangzhou districts (Xiangcheng, Longwen, Longhai and Changtai), which form a built-up area of 7,284,148 inhabitants. This area also connects with Quanzhou in the north, making up a metropolis of nearly ten million people. The Kinmen Islands (Quemoy) administered by the Republic of China (Taiwan) lie less than 6 kilometers (4 mi) away separated by Xiamen Bay. As part of the Opening Up Policy under Deng Xiaoping, Xiamen became one of China's original four special economic zones opened to foreign investment and trade in the early 1980s.
Xiamen Island possessed a major international seaport. The port of Xiamen is a well-developed first-class trunk line port in the Asia-Pacific region. It is ranked the 7th-largest container port in China and ranks 14th in the world. It is the 4th port in China with the capacity to handle 6th-generation large container ships. On 31 August 2010, Xiamen Port incorporated the neighboring port of Zhangzhou to form the largest port of China's Southeast. Ever since the 12th century, Xiamen was also an important origin for many migrants to Singapore, Malaysia, Indonesia and the Philippines. The overseas Chinese used to support Xiamen's educational and cultural institutions. Xiamen is classified as a Large-Port Metropolis.