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  • Zhongyuan District

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.

Zhongyuan District is the central city of Zhengzhou, the capital of Henan Province, the seat of the municipal party committee and municipal government of Zhengzhou, and the political and cultural center of Zhengzhou. As of 2017, the Central Plains District has a total area of 195 square kilometers, 12 streets, a resident population of 1.048 million, and an urbanization rate of 90.96%. In 2017, the Central Plains District's GDP was 72.012 billion yuan, the per capita GDP was 69187 yuan, the industrial structure of the three industries was 0.1V 37.5U 62.4 yuan, the investment in fixed assets was 70.249 billion yuan, the total retail sales of consumer goods was 27.571 billion yuan, the per capita disposable income of urban residents was 37368 yuan, and the per capita disposable income of rural residents was 21205 yuan. In October 2018, Zhongyuan District was selected as one of the Top 100 Investment potentials in China in 2018.
Airport In Zhongyuan District - Zhengzhou Xinzheng International Airport
Zhengzhou Xinzheng International Airport (Zhengzhou Xinzheng International Airport, IATA: CGO, ICAO: ZHCC), referred to as "Xinzheng Airport", is located at the junction of Xinzheng City and Zhongmu County, Zhengzhou City, Henan Province, China. It is a 4F international civil airport and the first in China The core component of Zhengzhou Airport Economic Comprehensive Experimental Zone, a national airport   , an international air cargo hub airport, one of the eight major regional hub airports in China   , "7×24 hours" "full time" customs clearance international airports, large domestic aviation hub airports   , international scheduled flight airports, and national first-class air ports open to the outside world.     
On August 28, 1997, Zhengzhou Xinzheng International Airport was completed and opened to traffic. In May 2013, the relocation of the second phase of the project began. In January 2014, the second phase of the reconstruction and expansion project started construction. On December 22, 2015, the second phase expansion project of Zhengzhou Xinzheng International Airport was officially put into operation. On January 7, 2016, the second runway of Zhengzhou Xinzheng International Airport was opened. On March 30, 2016, the T1 terminal was closed for renovation, and all flights were moved to the T2 terminal.
As of December 2015, Zhengzhou Xinzheng International Airport has two terminals (T1 terminal is out of service), with a total area of ​​620,000 square meters; T1 and T2 terminals have 158 parking bays, including 149 passenger aircraft parking bays ; It has two runways, 3400 meters and 3600 meters respectively.   As of December 2018, Zhengzhou Xinzheng International Airport has 55 passenger airlines, 208 passenger routes, and 116 passenger cities; 21 cargo airlines, 34 cargo routes, and 40 cargo cities.   
In 2020, the passenger throughput of Zhengzhou Xinzheng International Airport was 21.4067 million passengers, a year-on-year decrease of 26.5%, ranking 11th in the country; the cargo and mail throughput was 639,400 tons, a year-on-year increase of 22.5%, ranking 6th in the country, with 178,600 transport movements , a year-on-year decrease of 17.4%.  
On August 16, 2022, the North Cargo Area of ​​Zhengzhou Xinzheng International Airport will start trial operation.  
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