Quanzhou

Quanzhou, alternatively known as Chinchew, is a prefecture-level port city on the north bank of the Jin River, beside the Taiwan Strait in southern Fujian, People's Republic of China. It is Fujian's largest most populous metropolitan region, with an area of 11,245 square kilometers (4,342 sq mi) and a population of 8,782,285 as of the 2020 census. Its built-up area is home to 6,669,711 inhabitants, encompassing the Licheng, Fengze, and Luojiang urban districts; Jinjiang, Nan'an, and Shishi cities; Hui'an County; and the Quanzhou District for Taiwanese Investment. Quanzhou was China's 12th-largest extended metropolitan area in 2010.

Quanzhou was China's major port for foreign traders, who knew it as Zaiton, during the 11th through 14th centuries. It was visited by both Marco Polo and Ibn Battuta; both travelers praised it as one of the most prosperous and glorious cities in the world. It was the naval base from which the Mongol attacks on Japan and Java were primarily launched and a cosmopolitan center with Buddhist and Hindu temples, Islamic mosques, and Christian churches, including a Catholic cathedral and Franciscan friaries. A failed revolt prompted a massacre of the city's foreign communities in 1357. Economic dislocations—including piracy and an imperial overreaction to it during the Ming and Qing—reduced its prosperity, with Japanese trade shifting to Ningbo and Zhapu and other foreign trade restricted to Guangzhou. Quanzhou became an opium-smuggling center in the 19th century but the siltation of its harbor hindered trade by larger ships.

Because of its importance for medieval maritime commerce, unique mix of religious buildings, and extensive archeological remains, "Quanzhou: Emporium of the World in Song-Yuan China" was inscribed on the UNESCO World Heritage List in 2021.