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  • XiHua 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.

Xihua County is located in the east of Henan Province, under the jurisdiction of Zhoukou City. Total area of 1194 square kilometers, arable land area of 1.1 million mu, jurisdiction over 18 townships, 3 agricultural and forestry farms, household registration population of 920000 (2013). Xihua Han County, known as Xihua, Changping, Jicheng, Gonggou and so on, has been renamed Xihua since the Tang Dynasty. The ruins of Nuwa City are the key cultural relics protection units in Henan Province. Xihua has been awarded the demonstration county of national drinking water safety project, the advanced county of national agricultural technology popularization, the forestry ecological county of the whole province, the double support model county of the whole province, and the advanced county of safe construction of the whole province, and has won the "Red Flag Canal Spirit Cup" of the whole province for five consecutive years. On January 25, 2019, he was selected as the national "Ping an Agricultural Machinery" demonstration county in 2018. On May 9, 2019, after special evaluation and inspection at the provincial level, it reached the hat standard for poverty alleviation.
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