ZSWZ meaning in Regional ?

Wenzhou (pronounced [wə́n.ʈʂóu] (listen); Wenzhounese: Yuziou [ʔy33–11 tɕiɤu33–32], simplified Chinese: 温州; traditional Chinese: 溫州; pinyin: Wēnzhōu) is a prefecture-level city in southeastern Zhejiang province in the People's Republic of China. Wenzhou is located at the extreme south east of Zhejiang Province with its borders connecting to Lishui on the west, Taizhou on the north, and Fujian to the south. It is surrounded by mountains, the East China Sea, and 436 islands, while its lowlands are almost entirely along its East China Sea coast, which is nearly 355 kilometres (221 miles) in length. Most of Wenzhou's area is mountainous as almost 76 percent of its 11,784-square-kilometre (4,550 sq mi) surface area is classified as mountains and hills. It is said that Wenzhou has 7/10 mountains, 1/10 water, and 2/10 farmland. At the time of the 2010 Chinese census, 3,039,500 people lived in Wenzhou's urban area; the area under its jurisdiction (which includes three satellite cities and six counties) held a population of 9,122,100 of which 31.16% are non-local residents from outside of Wenzhou.

Originally known as Yongjia (Chinese: 永嘉), Wenzhou was a prosperous foreign treaty port, which remains well-preserved today. It is situated in a mountainous region and, as a result, has been isolated for most of its history from the rest of the country, making the local culture and language very distinct not only from the rest of China but from neighbouring areas as well. The city is also the native land of many emigrants to Europe and the United States, with many of these Wenzhounese emigrants being entrepreneurs who start restaurants, retail and wholesale businesses in their adopted countries. Wenzhou people make up a large number of ethnic Chinese residents of Italy, where in some regions such as Tuscany, they comprise 90% of all Chinese residents. Significant concentrations of Wenzhounese people can also be found across France and Spain.