Beihai:
 

Běihǎi (Chinese Postal Map Romanisation: Pakhoi; Chinese: 北海) is a prefecture-level city in the south of Guangxi, People's Republic of China. The name of the city means "north of the sea" in Chinese, signifying its status as a seaport on the north shore of the Gulf of Tonkin, which has granted it historical importance as a port of international trade for Guangxi, Hunan, Hubei, Sichuan, Guizhou, and Yunnan. Between the years 2006 and 2020, Beihai is predicted to be the world's fastest growing city. Beihai has a large shipyard, but most of the money generated in the city is derived from trade.
 
The dialect spoken throughout Beihai is "Baihua", a Cantonese dialect; Mandarin is not often used or spoken by the population, though it is the official language used in government, business and post-elementary-level education throughout mainland China.
 Area: 3,337 square kilometres (1,288 sq mi), 957 square kilometres (369 sq mi) urban districts and 563 square kilometres (217 sq mi) for the built-up area.
 Population: 1,539,300 at the 2010 census whom 405,600 live in the built-up area made of 2 urban districts Haicheng and Yinhai.
 Municipal seat: Haicheng District
 Geographic coordinates: 108°50′45″ - 109°47′28″ East, 21°29′ - 21°55′34″ North
 
It governs the small islands of Weizhou and Xieyang, and is directly north of Hainan Island.