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  • Longmen 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.

Longmen County, which belongs to Huizhou City, Guangdong Province, was originally the Shanglongmen area of Zengcheng County, so it was named after Longmen County. Longmen County is located in the middle of Guangdong Province, the upper reaches of Zengjiang River, bordering Heyuan City and Boluo County of Huizhou City in the southeast, Conghua District and Zengcheng District of Guangzhou City in the southwest, and Xinfeng County of Shaoguan City in the north. The administrative area is located between longitude 113 °48 "26"-114 °24 "58" east and latitude 23 °20 "06"-23 °57 "50" north. Longmen County has a vast land, with a total area of 2295 square kilometers from northwest to southeast. As of 2018, Longmen County has jurisdiction over 7 towns, 2 streets, 1 township and 2 township units. By the end of 2017, the resident population was 326800. Longmen County was awarded on November 14, 2017.
Airport In Longmen County - Huizhou Pingtan Airport
Huizhou Pingtan Airport (Huizhou Pingtan Airport, IATA: HUZ, ICAO: ZGHZ), referred to as Huizhou Airport, is located in the east of Pingtan Town, Huiyang District, Huizhou City, Guangdong Province, China, about 20 kilometers from the center of Huicheng District, Huizhou City; the flight area level is 4C It is one of the feeder airports in the eastern part of Guangdong Province in South China.  
Huizhou Pingtan Airport was built in the 1950s as a military airport; civil aviation services were opened in 1985; civil aviation services ceased in 2002; expansion and reconstruction were carried out in 2014; civil aviation was restarted on February 5, 2015;   The expansion construction was started again on June 28, 2018.  
As of May 5, 2017, Huizhou Pingtan Airport covers a total area of ​​5,225 acres, with a terminal area of ​​5,938 square meters and a cargo terminal area of ​​more than 2,000 square meters; the runway is 2,400 meters long and 48 meters wide, and the apron area is 13,000 square meters Meter.    
In 2018, Huizhou Pingtan Airport handled 1.88 million passengers, took off and landed 15,110 flights, and handled 5,501 tons of cargo and mail, an increase of 96.4%, 74.3% and 38% respectively compared to 2017.  
On October 3, 2019, the annual passenger throughput of Huizhou Airport exceeded 2 million for the first time.  
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Travel Asks In Longmen County