• San Francisco
  • Zhenghe County

San Francisco (/ˌsæn frənˈsɪskoʊ/; Spanish for "Saint Francis"), officially the City and County of San Francisco, is the commercial, financial, and cultural center of Northern California in the United States. The city proper is the fourth most populous in California and 17th most populous in the United States, with 815,201 residents as of 2021. It covers a land area of 46.9 square miles (121 square kilometers), at the end of the San Francisco Peninsula, making it the second most densely populated large U.S. city after New York City, and the fifth most densely populated U.S. county, behind only four of the five New York City boroughs. Among the 91 U.S. cities proper with over 250,000 residents, San Francisco was ranked first by per capita income (at $160,749) and sixth by aggregate income as of 2021. Colloquial nicknames for San Francisco include SF, San Fran, The City, Frisco, and Baghdad by the Bay.

San Francisco and the surrounding San Francisco Bay Area are a global center of economic activity and the arts and sciences, spurred by leading universities, high-tech, healthcare, FIRE, and professional services sectors. As of 2020, the metropolitan area, with 6.7 million residents, ranked 5th by GDP ($874 billion) and 2nd by GDP per capita ($131,082) across the OECD countries, ahead of global cities like Paris, London, and Singapore. San Francisco anchors the 13th most populous metropolitan statistical area in the United States with 4.6 million residents, and the fourth-largest by aggregate income and economic output, with a GDP of $669 billion in 2021. The wider San Jose–San Francisco–Oakland, CA Combined Statistical Area is the fifth most populous, with 9.5 million residents, and the third-largest by economic output, with a GDP of $1.25 trillion in 2021. In the same year, San Francisco proper had a GDP of $236.4 billion, and a GDP per capita of $289,990. San Francisco was ranked seventh in the world and third in the United States on the Global Financial Centres Index as of March 2022.

Zhenghe County (ancient Jianning Prefecture Zhenghe County) Nanping City, Fujian Province, China, is located in the north of Fujian Province, adjacent to the south of Zhejiang Province, latitude 27 °03 in north latitude and 119 °17'in longitude 118 °33. The maximum distance between east and west is 72 km, and the maximum distance between north and south is 46 km. The total area is 1735 square kilometers. Jianou dialect, a dialect of northern Fujian, is widely used. Political construction, Xiaopu, Ansong highway transit. In 1936, memorial sites such as Donggongshan rendezvous of the Chinese Workers' and Peasants' Red Army in eastern Fujian and the independent division in northern Fujian, Huangnianshan in the Tang Dynasty, and Jinping, the former site of the silver miners' uprising in the Ming Dynasty, are monuments of Buddha's Rock and Baoyan. In 2017, Zhenghe County's GDP totaled 6.31632 billion yuan, an increase of 8.8 percent. In July 2019, he was selected into the national intellectual property rights strong county engineering test.
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