• San Francisco
  • Zhengding 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.

Zhengding County is located in the southwest of Hebei Province and the Jizhong Plain in the middle of the North China Plain. In ancient times, it was called Changshan and Zhengding. It was once called "Sanxiong Town in the North" with Beijing and Baoding. It is a famous historical and cultural city of the country and the hometown of Chinese folk art. It is also the hometown of Zhao Tuo, the centenarian emperor and General Zhao Yun, the ever-winning general. By 2010, there were 9 national level cultural relics protection units and 6 provincial level cultural relics protection units. Zhengding County is located between longitude 114 °23km east and latitude 37 °58km north, 258km north of the capital Beijing, 350km away from Tianjin Xingang Port, 300km east of Huanghua Port, 160km west of Taiyuan, and south of Shijiazhuang City, the provincial capital. There are Zhengding International Airport, high-speed rail, bullet train, Beijing-Zhuhai, Beijing-Kunming and Shihuang expressways.
Airport In Zhengding County  - Shijiazhuang Zhengding International Airport
Shijiazhuang Zhengding International Airport (IATA: SJW, ICAO: ZBSJ), located in the northeast of Zhengding County, Shijiazhuang City, Hebei Province, China, is 32 kilometers away from the urban area. Important air gateway, alternate airport of Beijing Capital Airport, regional aviation hub   , An important international air cargo transit base in northern China.  
Shijiazhuang Zhengding International Airport officially opened on February 18, 1995. In March 1996, Shijiazhuang Air Port was officially opened to the outside world. In July 2008, Shijiazhuang Zhengding Airport was renamed "Shijiazhuang Zhengding International Airport". The total length of the airport runway is 3,400 meters. There are two terminal buildings, No. 1 and No. 2, with a total area of ​​209,000 square meters.  
In 2020, Shijiazhuang Zhengding International Airport will handle 8.203 million passengers, a year-on-year decrease of 31.2%; cargo and mail throughput will be 86,390.4 tons, a year-on-year increase of 62.3%; aircraft movements will be 76,800, a year-on-year decrease of 1.4%.  
Travel Sights In Zhengding County 
Travel Notes In Zhengding County 
Travel notes in Shijiazhuang, Hebei (July 2019)
In July 2019, I drove to Zhengding and Baodu Villages in Shijiazhuang for 2 days. 1. Shijiazhuang, Zhengding County: Zhengding is a famous national hi
Brothers and sisters travel in early summer - Zhengding Ancient Pagoda
I took a battery car from Rongguo Mansion and came to Huata smoothly. The location of Huata is Guanghui Temple. Guanghui Temple was built in the first
Hebei Zhengding Ancient City IV Rongguo Mansion, Yanghe Tower
During Zhengding, I visited Rongguo Mansion. It is located at No. 51, Xingrong Road, Zhengding County. It is an antique building built for the filming
Zhengding: The land of Longxing brushes the national security
Zhengding, a famous national historical and cultural city, has the reputation of "three mountains are missing, nine bridges are not flowing", "nine fl