• San Francisco
  • Jingyan 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.

Jingyan County, which belongs to Leshan City, Sichuan Province, is located in the southwest of Sichuan Basin, between longitude 102 °55 "104 °00" east and latitude 28 °25 "29 °55 'north, with a total area of 840.6 square kilometers. Jingyan County belongs to the humid climate area of the middle subtropics of Sichuan Basin, with warm and humid climate, the same season of rain, abundant rainfall, but uneven distribution, no severe cold in winter, no heat in summer, slight lack of sunshine, four distinct hot and cold seasons, and two distinct dry and wet seasons. As of 2018, Jingyan County has jurisdiction over 27 townships with a population of about 396500. Jingyan County in ancient times for the field of Shu, Han home Wuyang County Jingyan Town, Sui Kaihuang 11 years (591) Li Longshan County, waste Puting home Jingyan County. From the eleventh year of Emperor Kaihuang of the Sui Dynasty (591) to the founding of the county, more than 600 from the Tang and Song dynasties to the early Yuan Dynasty
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